Tsvetkova I.V., Rozenfeld E.L. (1964) Neuraminidase in animal tissues. Voprosy Meditsinskoi Khimii, 10(6), 633-635.

Tsvetkova I.V. et al. Neuraminidase in animal tissues // Voprosy Meditsinskoi Khimii. - 1964. - V. 10. -N 6. - P. 633-635.

Tsvetkova I.V. et al., "Neuraminidase in animal tissues." Voprosy Meditsinskoi Khimii 10.6 (1964): 633-635.

Tsvetkova, I. V., Rozenfeld, E. L. (1964). Neuraminidase in animal tissues. Voprosy Meditsinskoi Khimii, 10(6), 633-635.