SEMENOV, V.; SIRYK, D.; KHARKOV, O. Convergence of the operator extrapolation method. Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 4, p. 28–35, 2021. DOI: 10.15407/dopovidi2021.04.028. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/2021-4-5. Acesso em: 21 apr. 2025.