1. N. I. Belostotskii and N. Sh. Amirov, Structure and Function of Lysosomes [in Russian], Moscow (1986), pp. 13?14.
2. V. M. Konovets and A. P. Levitskii, Ukr. Biokhim. Zh., No. 4, 453 (1973).
3. A. P. Levitskii, ?Digestive enzymes of the salivary glands,? Dissertation for the Degree of Doctor of Biological Sciences, Odessa (1973).
4. A. P. Levitskii, A. I. Marchenko, and T. L. Rybak, Lab. Delo, No. 10, 624 (1973).
5. A. S. Loginov and N. Sh. Amirov, Progress in the Diagnosis and Treatment of Diseases of the Stomach and Duodenum [in Russian], Moscow (1985), pp. 5?15.