Transport for disabled people : disabled people and cars ; ECMT seminar, 12th - 13th April 1988
Verkehr der Zukunft : Beiträge zum 3. Wissenschaftstag des ILS am 10. u. 11. Mai 1989
Transport for people with mobility handicaps : information and communication
Prospects for East-West European transport : International seminar Paris 6th - 7th December 1990
Güterverkehrsströme in Europa : Horizont 2000 plus; 2. - 3. April 1992 in Nürnberg