Fang, Ming-Lei, Shan Yue, Chun Li, and Hao-Xiang Wang. 2014. “EXISTENCE OF THREE SOLUTIONS FOR NONLOCAL ELLIPTIC SYSTEM OF (p\(_1\) , . , p\(_n\))-KIRCHHOFF TYPE”. Italian Journal of Pure and Applied Mathematics 33 (December):489-500. https://journals.uniurb.it/index.php/ijpam/article/view/6273.