Geĭtman I.Ya., Kardash B.E., Kivman G.Ya. (1977) Trypsin and lipase activity in the presence of antibiotics. Voprosy Meditsinskoi Khimii, 23(5), 632-635.
Geĭtman I.Ya. et al. Trypsin and lipase activity in the presence of antibiotics // Voprosy Meditsinskoi Khimii. - 1977. - V. 23. -N 5. - P. 632-635.
Geĭtman I.Ya. et al., "Trypsin and lipase activity in the presence of antibiotics." Voprosy Meditsinskoi Khimii 23.5 (1977): 632-635.
Geĭtman, I. Ya., Kardash, B. E., Kivman, G. Ya. (1977). Trypsin and lipase activity in the presence of antibiotics. Voprosy Meditsinskoi Khimii, 23(5), 632-635.