Symplectic invariant reductions of completely integrable dynamical systems on functional spaces, and their invariant submanifolds. Neliniini Kolyvannya, [S. l.], v. 3, n. 2, p. 206–217, 2000. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/111. Acesso em: 22 jan. 2026.