Zohra Farnana, and Thuraya Rkhayes. “Weak Derivatives and Their Role in the Construction of Sobolev Spaces”. African Journal of Advanced Pure and Applied Sciences 5, no. 3 (August 12, 2026): 216–229. Accessed August 13, 2026. https://aaasjournals.com/index.php/ajapas/article/view/2127.