Nguyen Kien Cuong and Duong Nguyen Khang 2008 Digestibility and growth in growing rabbits fed a basal diet of sweet potato vines replaced with cassava hay.  Proceedings MEKARN Rabbit Conference: Organic rabbit production from forages (Editors: Reg Preston and Nnguyen Van Thu), Cantho University, Vietnam, 25-27 November 2008 http://www.mekarn.org/prorab/cuon.htm