Bonatsos, Dennis, C. Daskaloyannis, and H. A. Mavrommatis. “Quasi-Exactly Soluble Potentials and Deformed Oscillators”. HNPS Advances in Nuclear Physics 6 (February 19, 2020): 199–211. Accessed July 22, 2024. https://eproceedings.epublishing.ekt.gr/index.php/hnps/article/view/2929.