GONCHAROVA, S. Ya.; SVISHCHUK, A. V. Stability of semi-Markov risk processes in schemes of averaging and diffusion approximation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 7, p. 972–979, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4686. Acesso em: 5 dec. 2025.