Trinh Xuan Thanh, Khuc Thi Hue, Nguyen Ngoc Anh and Preston T R 2012 Nutritive value of cassava stems and use feed resource for growing goats; Proceedings of the International Conference "Livestock-Based Farming Systems, Renewable  Resources and the Environment", 6-9 June 2012, Dalat, Vietnam (Editors: Reg Preston and Sisomphone Southavong) http:/www.mekarn.org/workshops/dalat2012/html/thanh.grrc.htm