MIKHAILETS, V. A.; MURACH, A. A.; NOVIKOV, V. Localization principles for Schrödinger operator with a singular matrix potential. Methods of Functional Analysis and Topology, [S. l.], v. 23, n. 4, p. 367–377, 2017. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/677. Acesso em: 16 dec. 2025.