LINCHUK, Y. On the transmutation of the Lions operator to the simplest form . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 3, p. 8–13, 2024. DOI: 10.15407/dopovidi2017.03.008. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/3324. Acesso em: 14 aug. 2025.