Nguyen Van Thu 2010 Supplementing rice straw with fresh water hyacinth (Eichhornia crassipes) to improve diet quality and performance in growing local cattle  (Editor: Reg Preston) International Conference on Livestock, Climate Change and Resource Depletion, Champasack University, Pakse, LAO PDR, 9-11 November 2010 . httm://www.mekarn.org/workshops/pakse/html/thu.ctu.htm