, Singapore, tourism and world ?? Third biennal conference on Tourism in Asia, vol.4, 1999.
« Inbound and outbound, two indicators for a best approach of the Singapore's tourism phenomenon, a vital component in the Republic's remaking », Fifi:h biennal conference on Tourism in Asia, 2002. ,
Tourism management and poli cy , perspectives from Singapore, WorU scimtific, 2001. ,