Tsvetkova I.V., Chemm L.V. (1976) Role of intracellular proteinases and glycosidases in the degradation of the 'large glycoprotein' responsible for the neuraminidase and hemagglutinating activity of the Newcastle disease virus. Voprosy Meditsinskoi Khimii, 22(2), 266-269.

Tsvetkova I.V. et al. Role of intracellular proteinases and glycosidases in the degradation of the 'large glycoprotein' responsible for the neuraminidase and hemagglutinating activity of the Newcastle disease virus // Voprosy Meditsinskoi Khimii. - 1976. - V. 22. -N 2. - P. 266-269.

Tsvetkova I.V. et al., "Role of intracellular proteinases and glycosidases in the degradation of the 'large glycoprotein' responsible for the neuraminidase and hemagglutinating activity of the Newcastle disease virus." Voprosy Meditsinskoi Khimii 22.2 (1976): 266-269.

Tsvetkova, I. V., Chemm, L. V. (1976). Role of intracellular proteinases and glycosidases in the degradation of the 'large glycoprotein' responsible for the neuraminidase and hemagglutinating activity of the Newcastle disease virus. Voprosy Meditsinskoi Khimii, 22(2), 266-269.