Nikol'skaia I.I., Kislina O.S., Tikhonenko T.I. (1967) Properties of Vipera lebetina venom phosphodiesterase. Voprosy Meditsinskoi Khimii, 13(1), 12-17.

Nikol'skaia I.I. et al. Properties of Vipera lebetina venom phosphodiesterase // Voprosy Meditsinskoi Khimii. - 1967. - V. 13. -N 1. - P. 12-17.

Nikol'skaia I.I. et al., "Properties of Vipera lebetina venom phosphodiesterase." Voprosy Meditsinskoi Khimii 13.1 (1967): 12-17.

Nikol'skaia, I. I., Kislina, O. S., Tikhonenko, T. I. (1967). Properties of Vipera lebetina venom phosphodiesterase. Voprosy Meditsinskoi Khimii, 13(1), 12-17.