BAZARGAN, J.; EGOROVA, I. Jacobi operator with step-like asymptotically periodic coefficients. Математическая физика, анализ, геометрия, Харків, Україна, v. 10, n. 3, p. 425–442, 2003. Disponível em: https://mag.ilt.kharkiv.ua/index.php/mag/article/view/m10-0424e. Acesso em: 25 лис. 2024.