Blåsten, Emilia, and Esa V. Vesalainen. “Non-Scattering Energies and Transmission Eigenvalues in H^n”. Annales Fennici Mathematici 45, no. 1 (February 1, 2020): 547–576. Accessed November 22, 2024. https://afm.journal.fi/article/view/135870.