Kurdachenko, L. ., A. Pypka, and I. Subbotin. “On the Influence of Ideals and Self-Idealizing Subalgebras on the Structure of Leibniz Algebras”. Reports of the National Academy of Sciences of Ukraine, no. 5, Oct. 2021, pp. 12-17, doi:10.15407/dopovidi2021.05.012.