Bauer, C.-A. (1980). „Active centers of α-chymotrypsin and of Streptomyces griseus proteases 1 and 3”. Eur. J. Biochem.105: 565-570. PMID6768556.
Tomita, N., Izumoto, Y., Horii, A., Doi, S., Yokouchi, H., Ogawa, M., Mori, T. and Matsubara, K. (1989). „Molecular cloning and nucleotide sequence of human pancreatic prechymotrypsinogen cDNA”. Biochem. Biophys. Res. Commun.158: 569-575. PMID2917002.