Tsvetkova I.V., Rozenfel'd E.L. (1961) Splitting neuraminic acid by rat testicular homogenaes and extracts. Voprosy Meditsinskoi Khimii, 7(5), 528-531.

Tsvetkova I.V. et al. Splitting neuraminic acid by rat testicular homogenaes and extracts // Voprosy Meditsinskoi Khimii. - 1961. - V. 7. -N 5. - P. 528-531.

Tsvetkova I.V. et al., "Splitting neuraminic acid by rat testicular homogenaes and extracts." Voprosy Meditsinskoi Khimii 7.5 (1961): 528-531.

Tsvetkova, I. V., Rozenfel'd, E. L. (1961). Splitting neuraminic acid by rat testicular homogenaes and extracts. Voprosy Meditsinskoi Khimii, 7(5), 528-531.