“Minimal Matrix Representations of Decomposable Lie Algebras of Dimension Less Than or Equal to Five: Doi:10.17398 2605-5686.33.2.219”. Extracta Mathematicae 33, no. 2 (December 1, 2018): 219–227. Accessed December 22, 2024. https://revista-em.unex.es/index.php/EM/article/view/2605-5686.33.2.219.