Ungar, A.B., Mai, M.G., Altran, A.E., Silva, T.A.S. e and Moraes, G. 2009. <b>Effect of dietary essential amino acids addition on digestive enzime secretion in silver catfish Rhamdia quelen (Siluriformes, Pimelodidae)</b&gt; - DOI: 10.4025/actascibiolsci.v31i1.822. Acta Scientiarum. Biological Sciences. 31, 1 (Apr. 2009), 105-111. DOI:https://doi.org/10.4025/actascibiolsci.v31i1.822.