Vanishing of the second cohomology groups of certain solvable Lie algebras. Uzbek Mathematical Journal, [S. l.], v. 69, n. 4, p. 217–226, 2025. DOI: 10.29229/uzmj.2025-4-21. Disponível em: https://uzmj.mathinst.uz/index.php/uzmj/article/view/122.. Acesso em: 4 dec. 2025.