Future organisation of the building process : information technology in the building industry / Geert T.A. SmeltzerFuture studies in construction : information technology in the building industry / Geert T.A. Smeltzer, Jan Dijkstra, Rob H.M. van ZutphenThe application of virtual reality systems in architectural design processes / Geert T.A. Smeltzer, Jo M.M. Mantelers, Walther A.H. Roelen