Wirtschaft & Verkehr : wieviel Verkehr braucht die Wirtschaft?; Dokumentation
Proceedings - 1998 Total Life Cycle Conference, [Graz, Austria, December 1 - 3, 1998]
Proceedings of the 1995 Total Life Cycle Conference : [Vienna, Austria, October 16 - 19, 1995]
Coastal shipping and the European economy, 1750 - 1980 : [mit 32 Tabellen]
Essays in transportation economics and policy : a handbook in honor of John R. Meyer