YURKO, V. Recovering singular differential operators on noncompact star-type graphs from Weyl functions. Tamkang Journal of Mathematics, [S. l.], v. 42, n. 2, p. 223–236, 2011. DOI: 10.5556/j.tkjm.42.2011.928. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/928. Acesso em: 5 may. 2024.