Bui Phan Thu Hang, Vo Lam and Preston T R 2012 Effect on growth of goats and enteric methane emissions of supplementing foliage of Melia azedarach with foliage of Mimosa pigra. 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/thuhang2.agu.htm