LEBEDEV, E. .; SHARAPOV, M. .; LIVINSKA, H. . On a system with retrial queue and unreliable server . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 9, p. 24–30, 2024. DOI: 10.15407/dopovidi2020.09.024. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/2020-9-4. Acesso em: 18 apr. 2026.