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.... | Scientific Staff Member of the Faculty of Electrical Engineering and Computer Science of the Research Department of Highvoltage Engineering / Materials Science / Electromagnetic Theory .... |
Fundamentals of Electrical Engineering / Materials in Electrical Engineering / High Voltage Engineering
Active service until 31.08.2014, member status at the HSZG from 01.09.2014
National:
International:
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2001 - 2014 | Appointment High Voltage Engineering |
1992 - 2014 | Professorship at Zittau / Görlitz University of Applied Sciences |
1985 - 1992 | Zittau University of Applied Sciences Senior research assistant |
1984 - 1985 | Kabelwerk Schwerin Development engineer |
1979 - 1984 | Zittau University of Engineering Senior research assistant at the Department of High Voltage Engineering |
1972 - 1979 | TU Dresden Doctorate in the field of high-voltage engineering |
1968 - 1972 | TU Dresden Studied electrical engineering |
Bär, C.: | Evaluation of dynamic hydrophobic properties of polymeric insulating materials using the dynamic drop test method under AC and DC stress (in cooperation with the Technical University of Munich, 2016) |
Jahn, H.: | On the influence of material and production-related parameters on the electrical surface behavior of silicone elastomers(in cooperation with TU Dresden, 2003) |
Lambrecht, J.: | Contribution to the evaluation of the hydrophobic properties of the surface of silicone elastomer composite insulations(in cooperation with TU Dresden, 2001) |
Djafri, S.: | On the separate evaluation of the influencing variables on the foreign layer flashover of insulators at alternating voltage (TH Zittau,1995) |
Hofmann, J.: | Electrical PD and leakage current measurements with impulse voltage on polymeric insulating material surfaces with drop coatings for diagnosing the surface condition - using the example of elastomers(TH Zittau,1995) |
Schmuck, F.: | On the time-lapse ageing test of silicone rubber surfaces under external layer loading and simultaneous 50 Hz voltage stress (TH Zittau,1992) |
2022 | Bärsch, R.; Pilling, J.: Insulating properties of polymer insulators, Chapter 6 of the textbook: K. O. Papailiou; F. Schmuck, Silikonisolatoren-Verbundisolatoren, 2nd edition, Springer Vieweg-Verlag 2022, ISBN 978-3-662-64248-1 |
2016 | Bär, C. Bärsch, R.; Hergert, A.; Kindersberger, J.: Evaluation of the Retention and Recovery of Hydrophobicity of Insulating Materials in High Voltage Outdoor Applications under AC and DC Stresses with the Dynamic Drop Test: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 23, No. 1, February 2016, pp. 294-303 Dreßler, M; Kornhuber, S.; Bärsch, R.; Jacob, G.; Knüpfer, B.: Short- and long-term insulating capacity of polymeric solid insulations with macroscopic longitudinal interfaces, VDE-Tagung 2016, Tagungsband, VDE-Verlag Berlin Offenbach Kühnel,S.; Kornhuber, S.; Bärsch, R.; Lambrecht, J.: Zur Bewertung der Fremdschichtüberschlagspannung von Glaskappenisolatoren mit definiert ungleichmäßiger Siliconbeschichtung, VDE-Tagung 2016, Tagungsband, VDE-Verlag Berlin Offenbach |
2015 | Hergert, A.; Kindersberger, J.; Bär, C.; Bärsch, R.: Bewertung der Hydrophobiewiederkehr polymerer Isolierwerkstoffe nach Gleichspannungsbeanspruchung, RCC-Fachtagung "Werkstoffe zur Anwendung in der elektrischen Energietechnik unter den besonderen Anforderungen der Hochspannungs-Gleichstrom-Übertragung (HGÜ), May 20-21, 2015, Berlin, Tagungsband Bär, C.; Bärsch, R.; Hergert, A.; Kindersberger, J.: Evaluation of Dynamic Hydrophobicity Properties with the Dynamic Drop Test under AC and DC Stress and the Hydrophobicity Transfer Test, 19th ISH Pilsen, Czech Republic, August , 23-28, 2015, Paper 335 Kühnel, S.; Bärsch, R.; Lambrecht, J.: On the Erosion- and Arc-Resistance when Tested with DC- and AC-Stress by Example of Silicone Elastomers, 19th ISH Pilsen, Czech Republic, August , 23-28, 2015 Hergert, A.; Kindersberger, J.; Bär, C.; Bärsch, R.: Status and development of test methods for the evaluation of dynamic hydrophobic properties of polymeric insulating materials for high-voltage applications, ETG-Fachbericht 140, pp. 9-14, VDE-Verlag Berlin-Offenbach 2013 Cervinka, R.; Kühnel, S.; Bärsch, R.; Seifert, J.; Lambrecht, J.: Evaluation of the erosion and tracking resistance of polymeric insulating solids under AC and DC stresses, ETG Technical Report 140, pp. 26-31, VDE-Verlag Berlin-Offenbach 2013 Haim, M.; Stimper, K.; Bärsch, R.: Resistance to creepage at elevated frequencies, ETG Technical Report 140, pp. 32-37, VDE-Verlag Berlin-Offenbach 2013 Bär, Ch.; Bärsch, R.; Lambrecht, J.; Simson, G: On the Influence of Selected Test Parameters on the Retention of Hydrophobicity of Silicone Elastomers in the Dynamic DROP Test under AC and DC Stress;18th ISH 2013, Seoul South Korea, OE1-04, pp. 1160-1165 |
2012 | Bär, C.; Bärsch, R.; Lambrecht, J.: Vergleichende Bewertung der Erosions- und Kriechstromfestigkeit ausgewählter Siliconelastomere unter Wechsel- und Gleichspannungsbeanspruchung, RCC-Fachtagung "Werkstoffe zur Anwendung in der elektrischen Energietechnik unter den besonderen Anforderungen der Hochspannungs-Gleichstrom-Übertragung (HGÜ), Berlin May 03-04, 2012, Tagungsband pp. 159-165 Hergert, A.; Kindersberger, J.; Bär, C.; Cervinka, R.; Bärsch, R.: Hydrophobic resistance of polymeric insulating materials with the dynamic drop test method - comparison between AC and DC stresses, RCC symposium "Materials for use in electrical power engineering under the special requirements of high-voltage direct current transmission (HVDC), Berlin May 3-4, 2012, conference proceedings pp. 151-158 |
2011 | Lambrecht, J., Grunwald, M., Bärsch, R.: Electrical resistivity and Contact Resistance of Electrically Conductive Silicones, 21st International Conference on Electricity Distribution (CIRED), Frankfurt, June 6-9, 2011, paper 0341 Pilling, J., Bärsch, R.; Berthold, V.; Lambrecht, J.; Bernauer, C.: Long Term Behavior of Outdoor Terminations made of SIR, 21st International Conference on Electricity Distribution (CIRED), Frankfurt, June 6-9, 2011, paper 100 Bärsch, R.; Kindersberger, J.: Electrical performance of polymeric surfaces under the influence of humidity and under polluted conditions, Highvolt Kolloquium' 11, Dresden May 19-20, 2011, conference proceedings Bär, C; Bärsch, R.: Über die Bewertung ausgewählter Oberflächeneigenschaften von Siliconelastomeren unter AC- und DC-Beanspruchungen, 3rd Burghauser Isolierstoff Kolloquium, June 09-10, 2011, Burghausen-Wacker-Chemie, Proceedings Bär, C., Cervinka, Bärsch, R. et al: On a Comparative Evaluation of the Retention of the Hydrophobicity and the Tracking Resistance of Silicone Elastomers under AC and DC Stresses, 17th ISH, August 22-26, 2011, Hannover, Germany, paper E-028 |
2010 | Lambrecht, J.; Grunwald, M.; Bärsch, R.: On the Stability of the Electrical Resistivity and the Contact Resistance of Electrically Conductive Modified Silicone Elastomers, 45 th International Universities Engineering Conference (UPEC2010), Cardiff, August 31 - September 3, 2010, proceedings Winter, H.-J., Lambrecht, J., Bärsch, R.: On the Measurement of the Dielectric Strength of Silicone Elastomers, 45 th International Universities Engineering Conference (UPEC2010), Cardiff, August 31 - September 3, 2010, proceedings Bärsch, R.; Küchler, A.: Stresses and electrical behavior of insulation systems under DC and mixed field stresses, ETG-Fachbericht 125, pp. 25-51, VDE-Verlag Berlin-Offenbach 2010 Cervinka, R.; Bärsch, R.; Seifert, J.: Influence of the test voltage type on the surface behavior of polymeric insulating materials under electrolytic external layer loads, ETG Technical Report 125, pp. 69-75, VDE-Verlag Berlin-Offenbach 2010 Bärsch, R.; Cervinka, R.: Surface behavior of epoxy resin molded materials under high voltage stress and electrolytic external layer stress, Seminar "Epoxidharze in der Elektrotechnik", Technische Akademie Esslingen, March 4-5, 2010, Tagungsband |
2009 | Bärsch, R.: Polymere Isolier- und Funktionswerkstoffe für Hochspannungsisolatoren und Kabelgarnituren - Beanspruchungen, anwendungsspezifische Eigenschaften und Prüfverfahren, RCC-Fachtagung "Werkstoffe - Forschung und Entwicklung neuer Technologien zur Anwendung in der elektrischen Energietechnik, Berlin May 06-07, 2009, Tagungsband (Ergänzungsband) pp. 1-54 Bernauer, C.; Pilling, J.; Berthold, V.; Bärsch, R.: Electrical long-term behavior of macroscopic insulating material interfaces under high alternating voltage stress and simultaneous moisture influence, RCC-Fachtagung "Werkstoffe - Forschung und Entwicklung neuer Technologien zur Anwendung in der elektrischen Energietechnik, Berlin 06-07 May 2009, Proceedings pp. 145-151 Paulick, R.; Bärsch, R.; Lambrecht, J.; Grunwald, M.; Evaluation of the electrical volume and contact resistance of carbon black-filled silicone elastomer layers from the point of view of their application in medium and high-voltage cable accessories, 2nd Burghausen Insulating Materials Colloquium, Burghausen June 18-19, 2009, conference proceedings Haim, M.; Stimper, K.; Bärsch, R.: Creep resistance of polymeric insulating materials at elevated frequencies, ETG-Fachbericht 122, pp. 21-28, VDE-Verlag Berlin Offenbach 2009 |
2008 | Bärsch, R.; Kindersberger, J.: Nonlinear dielectric functional properties of dielectrics, ETG Technical Report 110, p.7-33, VDE-Verlag 2008 Seifert, J.M.; Bärsch, R.; Vosloo, W.L.: Dimensioning of the Housing Profile of Silicone Rubber Composite Insulators for Harsh Marine Pollution Conditions, CIGRE Session 2008, Paris, paper D1 - 303 Päsold, G.; Bärsch, R.; Mauroux, J.C.; Schoenemann, T.: Electrical behavior of polymeric insulating material surfaces under harsh indoor climatic conditions, ETG - Technical Report 112, pp. 27-34, VDE-Verlag 2008 Cervinka, R.; Bärsch, R.; Exl, F.; Kindersberger, J.; Winter, H.J.: Investigations into the resistance of the hydrophobicity of polymeric insulating material surfaces and their return with the dynamic drop test method, ETG - Technical Report 112, pp. 55-62, VDE-Verlag 2008 |
2007 | Seifert, J; Bärsch, R.: Design Evaluation of Silicone Rubber Composite Insulators under the Aspect of Surface Pollution Stress, 15th ISH, Ljubljana, Slovenia, August 27-31 2007, proceedings Bärsch, R.; Winter, H.-J.; Lambrecht, J.: Surface Behavior of Silicone Elastomers Stressed by Moisture and Pollution, 15th ISH Ljubljana, Slovenia, August 27-31 2007, proceedings Seifert, J; Winter, H.-J.; Bärsch, R.; Bognar, A.: Tracking and Erosion Performance of Liquid Silicone Rubber HV Composite Insulator Housings, IEEE Conference on Electrical Insulation and Dielectric Phenomena, Vancouver BC, Canada, October 14-17, (2007) proceedings Bärsch, R.: Evaluation of dielectric and electrical properties of silicone elastomers for use in high voltage insulations, 1st Insulation Colloquium Burghausen, Wacker-Chemie, June 14-15, 2007, Proceedings |
2006 | Bärsch, R.: Electrical behavior of polymeric insulating materials under outdoor and difficult climatic indoor conditions, RCC-Fachtagung "Werkstoffe für Isolatoren, Überspannungsableiter, Kabelgarnituren, Schaltgeräte, Berlin 06-07 April 2006, Tagungsband p. 29-47 Jahn, H.; Bärsch, R.: Evaluation of the hydrophobic state of insulating material surfaces with electrical diagnostic methods. RCC symposium "Materials for insulators, surge arresters, cable accessories, switchgear, Berlin April 06-07, 2006, conference proceedings pp. 231-239 Hofmann, J.; Pilling, J.; Berthold, V.: Mittelspannungs-Kabelgarnituren aus Silikon-Elastomeren mit refraktiver Feldsteuerung, RCC-Fachtagung "Werkstoffe für Isolatoren, Überspannungsableiter, Kabelgarnituren, Schaltgeräte, Berlin April 06-07, 2006, Tagungsband p. 151-158 |
2005 | Bärsch, R.; Kindersberger, J.: Solid-gas interface - stresses, interactions, design, test methods, service life, ETG Technical Report 99, VDE-Verlag 2005, pp. 7-26 Seifert, J.; Bärsch, R.: Evaluation of the creepage distance design of silicone composite insulators under the aspect of external layer design tests and many years of operating experience. ETG Technical Report 99, pp. 47-54, VDE-Verlag 2005 Bärsch, R.; Berthold, V.; Pilling, J.; Hofmann, J.: Basic investigations into the insulating capacity of silicone insulators with interfaces for the development of compact medium-voltage cable joints. ETG Technical Report 99, pp. 195-200, VDE-Verlag 2005 Gustke, U.; Bärsch, R.; Bendius, B.; Lotze, G.: Possibilities of optimizing current collector contacts on the railroad. VDE Technical Report 61, pp. 111-121, VDE-Verlag 2005 |
2004 | Bärsch, R.; Berthold, V., Pilling, J.; Hirsch, T.; Lemke, E.: Möglichkeiten der elektrischen und akustischen Teilentladungsmessungen zur Fehlererkennung in Mittelspannungs-Kabelgarnituren. ETG Technical Report 97, pp. 41-48, VDE-Verlag 2004 |
2003 | Bärsch, R.: Evaluation of the hydrophobicity and leakage current behavior of silicone elastomers for high-voltage outdoor insulators, ETG Technical Report 93, pp. 97-108, VDE-Verlag 2003 Gustke, U.; Bärsch, R.; Kuntze, K.-D.; Ütrecht, W.: Electrical and thermal behavior of sliding contacts for traction current collectors. 48th Scientific Colloquium Technical University Ilmenau, September 22-25, 2003, Proceedings Bärsch, R.; Gustke, U.; Lambrecht, J.; Wolf, H.-P.: On the Reproducibility and the Long Term Stability of the Hydrophobicity Transfer Ability of Silicones. XIIIth ISH, Delft, Netherlands, August 25-29, 2003, proceedings |
2001 | Bärsch, R.; Jahn, H.; Friebe, R.; Steinberger, H.: On the Influence of Different Stresses on the Hydrophobicity and the Electrical Behavior of Silicone Rubber Surfaces. 1st European Silicon Days Munich, September 6-7, 2001, proceedings Gustke, U.; Bärsch, R.; Lotze, G.; Lauke, B.: Electrical and mechanical properties of polymer composites with metallic short fibers. Composite materials and material composites. Edited by Wielage, B.; Leonardt, G.. Wiley-VCH 2001, Weinheim, New York, pp. 68-74 Grützmacher, J.; Bärsch, R.; Pilling, J.: Model Investigations on the PD-Behavior and the Breakdown of Polymeric Solid Insulations with Macroscopic Interfaces in the Direction of the Electrical Field. International Conference on Advances in Processing, Testing and Application of Dielectric Materials (APTADM'2000) Wroclaw, Poland, September 2001, Proceedings pp.143-146 Jahn, H.; Bärsch, R.: On the Influence of different stress factors on the hydrophobicity and the electrical behavior of silicone rubber surfaces. International Conference on Advances in Processing, Testing and Application of Dielectric Materials (APTADM'2000) Wroclaw, Poland, September 2001, Proceedings pp.363-366 |
2000 | Jahn, H.; Bärsch, R.; Wendt, E.: The Influence of Temperature on the Recovery of the Hydrophobicity on Silicone Rubber Surfaces. IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) 2000, Paper No. 3A-16, Victoria, BC, Canada, Oct. 15-18 2000 |
1999 | Lambrecht, J.; Pilling, J.; Bärsch, R.: On the behavior of insulations with interfaces in medium voltage cable accessories-model investigations,11th ISH London, August 1999, Proc. Vol. 4, pp. 4.14. Jahn, H.; Bärsch, R.: Oberflächenverhalten polymerer Isolierstoffe unter Multi-Stress-Bedingungen- Bewertung von EP-und PUR-Oberflächen unter Spannungs- und Feuchtebelastung in einem modifizierten Radtest, ETG-Fachbericht 76, pp. 137-144, VDE-Verlag 1999 Pilling, J.; Bärsch, R.; Petrusch, W.: Test methods for insulations with external interfaces, ETG-Fachbericht 76, pp. 213-223, VDE-Verlag 1999 |
1998 | Tuncer, E.; Gubanski, S.M.; Lambrecht, J.; Bärsch, R.: Thermally Stimulated Depolarization Currents of Silicone Rubbers Immersed in Water, IEEE International Conference on Conduction and Breakdown in Solid Dielectrics,June 1998,Västeras, Sweden, Proc. pp. 193-197 Bärsch, R. and others: Operating experience and investigations on plastic insulators in a 20 kV line on the island of Nordstrand, communication from the working group DKE/AK 451.02 "Plastic insulators", etz-report 30, vde-Verlag 1998 Lange, G.; Bärsch, R.; Lambrecht, J.; Liebermann, H.; Winter, H.J. ; Wolters, H.: First operating experience with a silicone coating on porcelain insulators under natural external layer conditions, Elektrizitätswirtschaft 97(1998) H. 23, p. 34-41 Jahn, H.; Bärsch, R., Kaltenborn, U.; Kindersberger, J.: The Evaluation of the Early Ageing Period of Castings Made of Epoxy and PUR Resins, IEEE CEIDP Atlanta, October 1998, paper 6B-7 |
1997 | Bärsch, R.; Lambrecht, J.; Winter, H.-J.: On the Evaluation of Influences on the Hydrophobicity of Silicone-Rubber- Surfaces,10th ISH Montreal August 1997, Proc. Vol. 3,paper 3220, pp. 13-16 Büchner, H.; Schmuck, F.; Zanetti, A.; Zingg, A.; Bärsch, R.; Jahn, H.: Impact of Filler to Silicone Rubber basing on RTV-2- and LSR-Systems,10th ISH Montreal August 1997, Proc. Vol. 3, pp. 209-214 Bärsch, R.; Lambrecht, J.; Pilling, J.; Weichold, J.; Haim, K.-D.: The Behavior of Medium Voltage Cable Terminations at Artificial Pollution.14th Intern. Confer. and Exhibition on Electrical Distribution (CIRED) June 1997, Birmingham, UK Session 3/3.14 Bärsch, R.; Schmuck, F.; Pilling, J.: Procedure for the evaluation of silicone elastomers for outdoor insulation. ETG Technical Report 68, pp. 39-47, VDE-Verlag 1997 |
1996 | Schmuck, F.; Bärsch, R.; Pilling, J.: About on Improved Evaluation of Results by the Standardized Salt-Fog-Procedure for Composite Insulators,ETPE Vol. 6, No. 4 (1996) pp. 237-243 Bärsch, R.; Lambrecht, J.; Jahn, H.: On the Evaluation of the Hydrophobicity of Composite Insulator Surfaces, IEEE- Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) 1996, San Francisco, pp. No. 5A-19 |
1995 | Bärsch, R.; Lambrecht, J.; Winter, H.-J.: On the valuation of the early aging period of polymer insulator surfaces during accelerated aging tests,9th ISH Graz (1995), paper 3023 Hofmann, J.; Bärsch, R.: Effects of Electrohydrodynamic processes in Droplet Layers to Partial Discharges and Leakage Current and their use for a Sensitive Diagnostic on Polymeric Insulating Surfaces, 9th ISH Graz August 1995, paper 5605 Kindersberger, J.; Kuhl, M.; Bärsch, R.: Evaluation of the Conditions of Non-Ceramic Insulators after Long-Term Operation under Service Conditions,9th ISH Graz August 1995, paper 3193 |
1993 | Bärsch, R.; Gremmel, H.; König, D.; Pilling, J.: Reduction of the insulating capacity at solid/gas interfaces due to partial discharges initiated by foreign layers. ETG Technical Report 49, pp. 133-149, VDE-Verlag 1993 Schmuck, F.; Bärsch, R.: Electrochemical and Microbiological Phenomena during Accelerating Ageing Tests of Polymeric Insulators, 8th ISH Yokohama (1993), paper 41.02 Pilling, J.; Chrzan, K.; Hofmann, J.; Bärsch, R.: Artificial Aging of Polymer Insulation Surface in a Clean Fog Chamber and its Evaluation, 8th ISH Yokohama (1993), paper 47.04 |
1992 | Bärsch, R.; Hofmann, J.; Pilling, J.: Electrical Partial Discharge Measurements on Insulation Surfaces with Moisture Layers, ETG-Fachbericht 40, VDE-Verlag 1992 Pilling, J.; Berndt, L.; Bärsch, R.: Results from basic investigations on the impurity layer problem in the area of the new federal states, Elektrizitätswirtschaft 91(1992) 8, p. 428 - 433 |
1991 | Pilling, J.; Bärsch, R.: Accelerated Ageing Tests of Housing Materials for Composite Insulators in a Fog-Chamber, ETEP Vol. 1, No. 2 (1991), pp. 89 - 94 Bärsch, R.; Niemann, D.; Schmuck, F.: On the testing of polymer cable terminations for power cables under external layer loads, Elektrizitätswirtschaft 90 (1991) H. 26, p. 1570 - 1575 Bärsch, R.; Hofmann, J.; Schmuck, F.: Accelerated Ageing Tests and Diagnostic Methods of Housing Materials for Composite Insulators,7th ISH Dresden (1991), paper 25.05 |
1990 | Menzel, W.; Bärsch, R.: Influence of air humidity on the flashover of plastic interior insulation with surface coatings, ELEKTRIE 44 (1990) H. 1, p. 30 - 32 |
1989 | Bärsch, R.; Pilling, J.; Schmuck, F.: Zum Problem der Prüfung von Kunststoffisolatoren, 34. Internat. Wiss. Kolloquium TH Ilmenau 1989, conference proceedings, pp. 167-170 |
1988 | Bärsch, R.; Pilling, J.: On electrical ageing and flashover on plastic insulator surfaces with electrolytically conductive foreign layers, Wiss. Berichte der TH Zittau (1988) H. 15, p. 36 - 41 |
1986 | Menzel, W.; Bärsch, R.; Pilling, J.: On the evaluation of the partial discharge resistance of plastic insulator surfaces, ELEKTRIE 40 (1986) H. 6, p. 210 - 212 |
1985 | Bärsch, R.; Post, H.-G.; Schwarzer, K.: On the testing of medium-voltage switching cells for use under difficult environmental conditions, ELEKTRIE 39 (1985) H. 10, p. 374 - 376 |
1984 | Bärsch, R. and others: A new method for measuring the degree of soiling on insulators, Elektropraktiker 38 (1984) H. 11, p. 390 - 392 |
1983 | Post, H.-G.; Bärsch, R.: Zur elektrischen Alterung an Grenzflächen organischer Isolierstoffe, 28. Intern. Wiss. Koll. TH Ilmenau (1983), conference proceedings, pp. 115-118 |
1982 | Pilling, J.; Berndt, L.; Bärsch, R.: Evaluation of partial layer conductivity measurements of naturally contaminated insulators, ELEKTRIE 36 (1982) H. 11, p. 598 - 602 Bärsch, R.; Post, H.-G.; Pilling, J.: On the design of plastic interior insulation from the point of view of temporary dew deposits, ELEKTRIE 36 (1982) H. 11, p. 587 - 591 |
1977 | Bärsch, R.; Böhme, H.; Schwarzer, K.: Zum Langzeitüberschlag organischer Isolierungen mit Taubelag, 22. Intern. Wiss. Koll. TH Ilmenau (1977), conference proceedings, pp. 131-134 |
1976 | Bärsch, R.; Böhme, H.: Flashover of organic insulating material surfaces with condensation, ELEKTRIE 30 (1976) H. 2, p. 90 - 92 |