Pravdina N.F., Shobukhov V.M., Veselovskaya T.V., Smirnova N.R., Galegov G.A. (1979) Effect of methotrexate on the activity of DNA-dependent RNA polymerases A, B in spleen of mice, infected with Rausher's leukosis virus as well as on development of virus-induced leukosis . Voprosy Meditsinskoi Khimii, 25(2), 193-197.

Pravdina N.F. et al. Effect of methotrexate on the activity of DNA-dependent RNA polymerases A, B in spleen of mice, infected with Rausher's leukosis virus as well as on development of virus-induced leukosis // Voprosy Meditsinskoi Khimii. - 1979. - V. 25. -N 2. - P. 193-197.

Pravdina N.F. et al., "Effect of methotrexate on the activity of DNA-dependent RNA polymerases A, B in spleen of mice, infected with Rausher's leukosis virus as well as on development of virus-induced leukosis ." Voprosy Meditsinskoi Khimii 25.2 (1979): 193-197.

Pravdina, N. F., Shobukhov, V. M., Veselovskaya, T. V., Smirnova, N. R., Galegov, G. A. (1979). Effect of methotrexate on the activity of DNA-dependent RNA polymerases A, B in spleen of mice, infected with Rausher's leukosis virus as well as on development of virus-induced leukosis . Voprosy Meditsinskoi Khimii, 25(2), 193-197.