XU, X.-J.; YANG, C.-F. . Inverse nodal problem for nonlocal differential operators. Tamkang Journal of Mathematics, [S. l.], v. 50, n. 3, p. 337–347, 2019. DOI: 10.5556/j.tkjm.50.2019.3361. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/3361. Acesso em: 8 may. 2024.