1.
PivovarchikV, ChernyshenkoA. Cospectral quantum graphs in the case of Dirichlet conditions at pendant vertices. Ukr. Mat. Zhurn. [Internet]. 2023Apr.11 [cited 2024Nov.21];75(3):382 -396. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/7351