1. Ugolev, A.M., Iezuitova, N.N., Masevich, Ts.G., Nadirova, T.Ya., and Timofeeva, N.M., Issledovanie pishchevaritel’nogo apparata u cheloveka (Investigation of Human Digestive Apparatus), Leningrad, 1969.
2. Rothman, S., Leibow, C., and Isenman, L., Conservation of digestive enzymes, Physiol. Rev., 2002, no. 82, pp. 1–18. doi 10.1152/physrev.00022.2001
3. Korot’ko, G.F., Formation of the enzyme component of secretions of digestive glands (review), Fiz. Kul’t. Sport: Nauka Prakt., 2013, no. 1, pp. 51–57.
4. Laporte, J.C. and Tremolieres, J., Regulation hormonale de la sécrétion enzymatique du pancréas exocrine, C. R. Acad. Sci., Sed. D, 1971, no. 273, pp. 1205–1207.
5. Vertiprakhov, V.G., Grozina, A.A., and Dolgorukova, A.M., Activity of pancreatic enzymes in broiler chickens at different stages of digestion, S-kh. Biol., 2016, vol. 51. doi 10.15389/agrobiology.2016.4.509rus