EDITORIAL BOARD. Naum Ilyich Akhiezer (on his 70th birthday) . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 23, n. 3, p. 362–363, 1971. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8562. Acesso em: 6 dec. 2025.