,. In memoriam of Sergey Konstantinovich Matveev (1938–2020). Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, [S. l.], v. 8, n. 2, p. 377–378, 2021. Disponível em: https://math-mech-astr-journal.spbu.ru/article/view/11486. Acesso em: 18 may. 2024.