Preston T R, Do H Q, Khoa T D, Hao T P and Leng R A 2013:
Protein solubility of fish meal and groundnut meal and methane production in an in vitro incubation.
Livestock Research for Rural Development. Volume 25, Article #16.
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, from http://www.lrrd.org/lrrd25/1/hqdo25016.htm