GODOY, T.; DOZO, E. Lami; PACZKA, S. The periodic parabolic eigenvalue problem with $L^\infty$ weight. Mathematica Scandinavica, Berkeley, CA, United States, v. 81, p. 20–34, 1997. DOI: 10.7146/math.scand.a-12864. Disponível em: https://journals.msp.org/mscand/article/view/1034. Acesso em: 24 jul. 2026.