Bui Phan Thu Hang, Truong Thi Bich Phuong, Vo Lam and T R Preston T R  2009 Water hyacinth (Eichhornia crassipes): an invasive weed or a potential feed for goats?  Proceedings MEKARN Workshop on  Livestock, Climate Change and the Environment (Editors: Reg Preston and Vo Lam ), An Giang University, Vietnam, 16-18 November 2009. http://www.mekarn.org/workshops/environ/Abstracts/thuhang_agu.htm