BURENKOV, V.; TARARYKOVA, T. Necessary and sufficient conditions of compactness of certain embeddings of Sobolev spaces. Eurasian Mathematical Journal, [S. l.], v. 10, n. 4, p. 14–23, 2019. DOI: 10.32523/2077-9879-2019-10-4-14-23. Disponível em: https://emj.enu.kz/index.php/main/article/view/159. Acesso em: 20 oct. 2026.