A new method of estimating the proportions of different proteins in a mixture using amino acid profiles: application to undigested proteins in the preruminant calf C. Duvaux, P. Guilloteau, R. Toullec and JW SissonsAnn. Zootech., 39 1 (1990) 9-18DOI: https://doi.org/10.1051/animres:19900102