+1 -- Minh HA-DUONG Chargé de recherche CNRS haduong at centre-cired.fr CIRED, Campus du Jardin Tropical tel: +33 1 43 94 73 81 45bis ave. de la Belle Gabrielle fax: +33 1 43 94 73 70 F94736 Nogent-sur-Marne, France Jabber: minh.haduong at gmail.com http://minh.haduong.com (work), http://minh69.blogspot.com (personal)