Proceedings

Liu, H. & C. Roberts (ed.) (2000) Proceedings of the First International Symposium on Underground Freight Transportation by Capsule Pipelines & Other Tube/Tunnel Systems 1999, Capsule Pipeline Research Center, University of Columbia (Columbia, Missouri)

Visser, J.G.S.N. & A.J. van Binsbergen (ed.) (2000) Proceedings 2nd International Symposium Underground Freight Transportation by Capsule Pipelines and Other Tube/Tunnel Systems (ISUFT 2000), TRAIL Conference Proceedings Series no. P2000/2, TRAIL Research School, Delft University of Technology (Delft, the Netherlands)

Stein, D. & B. Schoesser (ed) (2002) ISUFT 2002, 3. internationales Symposium über Underground Freight Transportation by Capsule Pipelines and other Tube/Tunnel Systems, Ruhr-Universität Bochum, 19-20 september 2002 (Bochum, Germany)