Marmilova, E., L. Kashirskaya, M. Karabasheva, y E. Kudryashova. Evaluation of Expert Opinions on Postal Voting in the Russian Federation. Universidad Y Sociedad, Vol. 14, n.ยบ 1, Jan. 2022, pp. 97-01, https://rus.ucf.edu.cu/index.php/rus/article/view/2539.