Automotive Electronics II, International Congress, Detroit, 24-28 Febr., 75
Int. Conf. on Electric Vehicle Development, London 31 May - 1 June, um 1976
Lectures Delivered at the Royaumont Seminar, Royaumont, 25 26 June 1974
Proc. of SPIE, NASA-ESA spacelab systems and programs, April 23-24, 1981, Washington, USA
Shuttle pointing of Electro-Optical experiments, Febr. 10-13, 1981; Los Angeles, USA