PETRAVCHUK, A. P. On the sum of an almost abelian Lie algebra and a Lie algebra finite-dimensional over its center. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 5, p. 636–644, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4650. Acesso em: 14 apr. 2025.