Rank-k perturbation of Hamiltonian Systems with Periodic Coefficients and Applications. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 12, n. 4, p. 1744–1770, 2019. DOI: 10.29020/nybg.ejpam.v12i4.3574. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3574. Acesso em: 23 nov. 2024.