MITROPOLSKY, Y. A.; SHEVELO, V. N.; LUCHKA, A. Y.; KURPEL, N. S. Yury Dmitrievich Sokolov (on his seventieth birthday). Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 4, p. 94–101, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8316. Acesso em: 6 dec. 2025.