DYMARSKII, Y. Intersection number and eigenvectors of quasilinear Hilbert-Schmidt operators. Математическая физика, анализ, геометрия, Харків, Україна, v. 9, n. 4, p. 604–621, 2002. Disponível em: https://mag.ilt.kharkiv.ua/index.php/mag/article/view/m09-0604e. Acesso em: 24 лис. 2024.