Team, Support. “Three Solutions for a Class of (p1, . , Pn)-Biharmonic Systems via Variational Methods: Shapour Heidarkhani”. Thai Journal of Mathematics 10, no. 3 (December 1, 2012): 497–515. Accessed May 7, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/336.