Kurniadi, Edi, Ema Carnia, and Herlina Napitupulu. “The Existence of Affine Structures on the Borel Subalgebra of Dimension 6”. ComTech: Computer, Mathematics and Engineering Applications 12, no. 1 (May 24, 2021): 45-52. Accessed March 29, 2025. https://journal.binus.ac.id/index.php/comtech/article/view/6581.