Kurdachenko, L.A., I.Ya. Subbotin, and V.S. Yashchuk. “On Ideals and Contraideals in Leibniz Algebras”. Reports of the National Academy of Sciences of Ukraine, no. 1 (January 27, 2020): 11–15. Accessed July 11, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/2020-1-2.