POLAK, M.; USTIMENKO, V. On new expanders of unbounded degree for practical applications in informatics . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 12, p. 44–50, 2014. DOI: 10.15407/dopovidi2014.12.044. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/17289. Acesso em: 20 jun. 2026.