KUDIN, V. I. The method of permissible basis matrices . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 9, p. 44–48, 2025. DOI: 10.15407/dopovidi2014.09.044. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/16683. Acesso em: 18 apr. 2026.