A. M. Strizhevskaya, E. R. Senzhapova, A. Z. Dzampaev, and V. N. Baykova, “Potential marker of the pharmacodynamic effect of high doses of methotrexate — homocysteine”, Пат. Физ. Эксп. Тер., vol. 58, no. 2, pp. 40–44, Jun. 2014.