Van der Merwe, A.C.; Haulofu, F.N.M.; Halbich, H.; Polzin, R.; Southern African Transport Conference (28th : 2009 : Pretoria, South Africa)
(Document Transformation Technologies, 2009-07-06)
Paper presented at the 28th Annual Southern African Transport Conference 6 - 9 July 2009 "Sustainable Transport", CSIR International Convention Centre, Pretoria, South Africa.