^Discovery of felinine: Westall, R. G. "Amino acids and other ampholytes of urine. II. Isolation of a new sulfur-containing amino acid from cat urine" Biochemical Journal (1953), 55, 244-8.
^W.H. Hendriks; P.J. Moughan; M.F. Tarttelin; A.D. Woolhouse (1995). "Felinine: a urinary amino acid of Felidae". Comp. Biochem. Physiol. 112B (4): 581–588. doi:10.1016/0305-0491(95)00130-1. PMID8590373.