BONDARENKO, N. Spectral analysis for the matrix Sturm-Liouville operator on a finite interval. Tamkang Journal of Mathematics, [S. l.], v. 42, n. 3, p. 305–327, 2011. DOI: 10.5556/j.tkjm.42.2011.756. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/756. Acesso em: 5 may. 2024.