Ahmad, AL-Nashri AL-hossain. “Derivations of Second Type of Algebra of Second Class Filiform Leibniz Algebras of Dimension Derivation (n+2)”. International Journal of Advanced Mathematical Sciences 5, no. 1 (April 10, 2017): 27–35. Accessed May 3, 2024. https://sciencepubco.com/index.php/IJAMS/article/view/6879.