SMIRNOV, R. G. On the Lie algebra structures connected with Hamiltonian dynamical systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 5, p. 699–705, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5051. Acesso em: 5 dec. 2025.