Levitskiĭ A.P., Kovalenko A.F. (1980) Effect of a number of enzyme preparations on the course of experimental parotitis. Voprosy Meditsinskoi Khimii, 26(6), 847-851.
Levitskiĭ A.P. et al. Effect of a number of enzyme preparations on the course of experimental parotitis // Voprosy Meditsinskoi Khimii. - 1980. - V. 26. -N 6. - P. 847-851.
Levitskiĭ A.P. et al., "Effect of a number of enzyme preparations on the course of experimental parotitis." Voprosy Meditsinskoi Khimii 26.6 (1980): 847-851.
Levitskiĭ, A. P., Kovalenko, A. F. (1980). Effect of a number of enzyme preparations on the course of experimental parotitis. Voprosy Meditsinskoi Khimii, 26(6), 847-851.