1. Impact of land use changes on mountain landscapes in northern Vietnam during the 1990s Author(s): Castella, J.-c., Tronche, N.R., and Vu, N. Format: Journal article Publisher: 2005.
2. Perspective d'un developpement rural durable: Le cas des Hmongs du Laos Author(s): Bouapao, Lytou Format: Thesis Publisher: Ann Arbor : Universite de Sherbrooke (Canada), 1994.