GUSAK, D. V. On the Exit of One Class of Random Walks from an Interval. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 9, p. 1209–1217, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3679. Acesso em: 6 dec. 2025.