Kadhim, Hussein K., and Mudhir A. Abdul Hussain. “The Analysis of Bifurcation Solutions by Angular Singularities”. Communications in Mathematics and Applications 10, no. 4 (December 31, 2019): 733–744. Accessed July 22, 2024. https://rgnpublications.com/journals/index.php/cma/article/view/1250.