Oviedo-Rondon, E.; Fritts, C.; Waldroup, P. Accuracy of OmniPro&Reg; Predictions for Amino Acid Needs Without Minimum Crude Protein Requirement. Int. J. Poult. Sci. 2003, 2 (3), 178–182. https://doi.org/10.3923/ijps.2003.178.182.