Kurniadi, Edi, Kankan Parmikanti, and Badrulfalah Badrulfalah. 2023. “Classification of Types A and A_+ from Low Dimensional Standard and Non-Standard Filiform Lie Algebras”. Journal of Natural Sciences and Mathematics Research 9 (2):102-8. https://journal.walisongo.ac.id/index.php/JNSMR/article/view/18083.