Chupordia, V. ., L. . Kurdachenko, and N. . Semko. “On the Structure of Leibniz Algebras, Whose Subalgebras Are Ideals or Core-Free”. Reports of the National Academy of Sciences of Ukraine, no. 7, Mar. 2024, pp. 17-21, doi:10.15407/dopovidi2020.07.017.