Ershova, Yu.Yu., I.I. Karpenko, and A.V. Kiselev. “On Inverse Topology Problem for Laplace Operators on Graphs”. Carpathian Mathematical Publications 6, no. 2 (December 25, 2014): 230–236. Accessed November 24, 2024. https://vps.pnu.edu.ua/index.php/cmp/article/view/1354.