Awin, Ali M., and M. Tubani. “The Behavior of the Zeros of Analytic Functions of Finite Quantum Systems With Physical Hamiltonians”. Journal of Progressive Research in Mathematics 9, no. 2 (September 16, 2016): 1361-1370. Accessed May 7, 2024. http://scitecresearch.com/journals/index.php/jprm/article/view/886.