NAULIN, R.; PINTO, M. Asymptotic solutions of nondiagonal linear difference systems. Tamkang Journal of Mathematics, [S. l.], v. 31, n. 3, p. 175–192, 2000. DOI: 10.5556/j.tkjm.31.2000.392. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/392. Acesso em: 20 apr. 2024.