MAKAROV, V. Essays on the spectral properties of the polynomially perturbed Hermite operator . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 4, p. 509–514, 2024. DOI: 10.3842/umzh.v74i4.7811. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7811. Acesso em: 17 apr. 2025.