YURKO, V. Inverse problems for differential operators with nonseparated boundary conditions in the central symmetric case. Tamkang Journal of Mathematics, [S. l.], v. 48, n. 4, p. 377–387, 2017. DOI: 10.5556/j.tkjm.48.2017.2492. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2492. Acesso em: 23 apr. 2024.