Piker E.G., Likhtenshteĭn A.V., Shapot V.S. (1967) Fractionation of nuclear RNA of animal tissues on methylated albumin with salt and temperature gradient. Voprosy Meditsinskoi Khimii, 13(4), 434-436.

Piker E.G. et al. Fractionation of nuclear RNA of animal tissues on methylated albumin with salt and temperature gradient // Voprosy Meditsinskoi Khimii. - 1967. - V. 13. -N 4. - P. 434-436.

Piker E.G. et al., "Fractionation of nuclear RNA of animal tissues on methylated albumin with salt and temperature gradient." Voprosy Meditsinskoi Khimii 13.4 (1967): 434-436.

Piker, E. G., Likhtenshteĭn, A. V., Shapot, V. S. (1967). Fractionation of nuclear RNA of animal tissues on methylated albumin with salt and temperature gradient. Voprosy Meditsinskoi Khimii, 13(4), 434-436.