Barendregt, Jacques, Vrieze, Koos (2) Mcphillips, Hubert (generic Education Training Services Limited), Jeffus, Larry (eastfield College (emeritus)), Bower, Lawrence (blackhawk Technical College (1) Okumus, Bendegul, Phd (rosen College Of Hospitality Management, University Of Central Florida, Usa), Linton-kelly, Heather (senior Research Manager, The Adventure Travel Trade Association) (1) Edwards, Howell G. M. (1) Welton, Chris (1)