BRASCHE, J. F. On eigenvalues and eigensolutions of the Schrödinger equation on the complement of a set with classical capacity zero. Methods of Functional Analysis and Topology, [S. l.], v. 9, n. 3, p. 189–206, 2003. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/215. Acesso em: 19 dec. 2025.