Manfred Wacker, University of Stuttgart WPS IV Toronto 04
Lixin Mao, Civil Eng. Dept., Tsinghua University Joe Lee, Transportation Center, University of Kansas WPS I Banff 97
Author: Mary Catherine Snyder, City of Seattle, Strategic Planning Office
WPS II Banff 1999
Thomas Braunwalder, ZEAG AG, Switzerland WPS III St. Andrews 2001
Brno, Czech Republic WPS IV Toronto 2004
Author: Samuel Iyiola Oni (Ph D), Dept of Geography & Planning, University of Lagos
WPS I Banff 1997
Samuel Iyiola, Dept of Geography & Planning, University of Lagos
WPS I Banff 97
Paul G Höglund, Transforsk-Transearch, Nordplan AB, Stockholm, Sweden. WPS III St. Andrews 2001