Fernández, Francisco Marcelo, and Javier Garcia. “HIGHLY ACCURATE CALCULATION OF THE REAL AND COMPLEX EIGENVALUES OF ONE-DIMENSIONAL ANHARMONIC OSCILLATORS”. Acta Polytechnica 57, no. 6 (December 30, 2017): 391–398. Accessed April 30, 2024. https://ojs.cvut.cz/ojs/index.php/ap/article/view/4339.