Cerrate, S., F. Yan, Z. Wang, C. Coto, P. Sacakli, and P.W. Waldroup. 2006. “Evaluation of Glycerine from Biodiesel Production As a Feed Ingredient for Broilers”. International Journal of Poultry Science 5 (11): 1001–1007. https://doi.org/10.3923/ijps.2006.1001.1007.