VASIL’EVA, A. A. Embeddings and Widths of Weighted Sobolev Classes. Eurasian Mathematical Journal, [S. l.], v. 6, n. 3, p. 93–100, 2015. Disponível em: https://emj.enu.kz/index.php/main/article/view/618. Acesso em: 9 oct. 2025.