Sahandi Torogh, R. “Existence of Positive Solutions for p1,p2 Laplacian System to Dirichlet Boundary Conditions: Mathematics-Physics”. International Journal of Fundamental Physical Sciences 6, no. 4 (December 31, 2016): 17-22. Accessed April 20, 2024. https://fundamentaljournals.org/index.php/ijfps/article/view/72.