GODOY, T.; DOZO, E. L.; PACZKA, S. The periodic parabolic eigenvalue problem with $L^\infty$ weight. MATHEMATICA SCANDINAVICA, [S. l.], v. 81, p. 20–34, 1997. DOI: 10.7146/math.scand.a-12864. Disponível em: https://www.mscand.dk/article/view/12864. Acesso em: 3 may. 2024.