Chiv Phiny, Khieu Borin and Chhay Ty 2006: Effect of level of effluent from plastic biodigesters loaded with pig manure on the growth of mulberry (Morus alba) trees;  Workshop-seminar "Forages for Pigs and Rabbits" MEKARN-CelAgrid, Phnom Penh, Cambodia, 22-24 August,  2006. Article # 24. Retrieved, from http://www.mekarn.org/proprf/phin.htm