Bondarenko, Natalia Pavlovna. “A 2-Edge Partial Inverse Problem for the Sturm-Liouville Operators With Singular Potentials on a Star-Shaped Graph”. Tamkang Journal of Mathematics 49, no. 1 (March 25, 2018): 49–66. Accessed May 4, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2425.