Military electronics defence EXPO 79, conf. proc., Wiesbaden, 25-27 Sept. 1979
Sympos. Papers, RTCM Assembly Meeting, San Diego, 26 - 28 April, 1976
8th International Aerospace Instrumentation Symposium 24th-27th March 1975 Cranfield England
XXII Convegno Internazionale delle Comunicazion, Genova, 7-12 Ottobre, 1974
Lectures Delivered at the Royaumont Seminar, Royaumont, 25 26 June 1974
third international electric vehicle symposium and exposition, washington, february 19-21, 74
Proc. of The Reliability Engng. Conf. For The Electr. Power Ind., New York, 21 February 1974
What impacts ATC? 18th Annual Meeting and Technical Program Miami Beach, October 15 - 18, 1973
Proceedings of the 1973 symposium on nondestructive testing of tires 10.-12.4.1973, Boston, Mass.
Communication with Extraterrestrial Intelligence, Yerevan, 5- 11 Sept., 1971