1980 joint ASME/IEEE/AAR railroad conf., IEEE technical papers, Montreal, Canada, Apr. 9-10, 1980
Impact of future use of electric cars in the St. Louis and Philadelphia Regions, Sept., 75
Int. Conf. on Electric Vehicle Development, London 31 May - 1 June, um 1976
Int. conf. on Maglev and linear drives, Vancouver, CDN, May 14-16, 1986