Sen Sorphea, Lundh T, Preston T R and Khieu Borin 2010Effect of stocking densities and feed
supplements on the growth performance of tilapia (Oreochromis spp.)
raised in ponds and in the paddy fieldMSc Thesis, MEKARN-SLU
http://www.mekarn.org/MSC2008-10/theses/sorp_1.htm