The Negative Spectrum of Schrödinger Operators with Fractal Potentials. Analysis in Theory and Applications, [S. l.], v. 31, n. 4, p. 381–393, 2017. DOI: 10.4208/ata.2015.v31.n4.4. Disponível em: https://www.global-sci.com/index.php/ata/article/view/8070. Acesso em: 5 dec. 2025.