MOLYBOGA, V. M.; MIKHAILETS, V. A. Schrödinger operators with complex singular potentials. Methods of Functional Analysis and Topology, [S. l.], v. 19, n. 1, p. 16–28, 2013. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/532. Acesso em: 16 dec. 2025.