LAMBERTI, P. D.; PERIN, M. On the sharpneess of a certain spectral stability estimate for the Dirichlet Laplacian. Eurasian Mathematical Journal, [S. l.], v. 1, n. 1, 2024. Disponível em: https://emj.enu.kz/index.php/main/article/view/32. Acesso em: 5 oct. 2024.