PRITULA, N. N. Lie-algebraic structure of integrable nonlinear dynamical systems on extended functional manifolds. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 11, p. 1512–1518, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5150. Acesso em: 5 dec. 2025.