Elenskiy Ю. Н. In Memory of Lazar Borisovich Greifer (20.03.1945 – 14.02.2021). BULLETIN OF PERM UNIVERSITY. MATHEMATICS. MECHANICS. COMPUTER SCIENCE, [S. l.], n. 1(52), p. 98–100, 2021. DOI: 10.17072/1993-0550-2021-1-98-100. Disponível em: http://press.psu.ru/index.php/Math/article/view/5039. Acesso em: 18 may. 2024.