Peanasky RJ, Gratecos D, Baratti J, Rovery M (May 1969). "Mode of activation of N-terminal sequence of subunit II in bovine procarboxypeptidase A and of porcine chymotrypsinogen C". Biochimica et Biophysica Acta (BBA) - Protein Structure. 181 (1): 82–92. doi:10.1016/0005-2795(69)90229-3. PMID5792601.
Peanasky RJ, Gratecos D, Baratti J, Rovery M (May 1969). "Mode of activation of N-terminal sequence of subunit II in bovine procarboxypeptidase A and of porcine chymotrypsinogen C". Biochimica et Biophysica Acta (BBA) - Protein Structure. 181 (1): 82–92. doi:10.1016/0005-2795(69)90229-3. PMID5792601.