Nguyen Van Sao, Nguyen Thi Mui and Dinh Van BinhImproving 2010  Edible biomass production of Tithonia diversifolia (Wild Sunflower) and effects of supplementation on foliage intake and growth rate of goats. International Conference on Livestock, Climate Change and Resource Depletion  (Editor: Reg Preston), Champasack University, Pakse, LAO PDR, 9-11 November 2010 . httm://www.mekarn.org/workshops/pakse/html/sao.grrc.htm