Xu, Haijing, Wei Zhou, Yanxiong Yan, and Guiyun Chen. “A NEW CHARACTERIZATION OF SIMPLE JANKO-GROUPS”. Italian Journal of Pure and Applied Mathematics 41 (February 27, 2019): 526–535. Accessed October 17, 2026. https://journals.uniurb.it/index.php/ijpam/article/view/7093.