Oleksandr Andriiovych Boichuk (on 60-th anniversary of his birthday). Neliniini Kolyvannya, [S. l.], v. 13, n. 2, p. 287–288, 2010. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/564. Acesso em: 21 jan. 2026.