Zohra Farnana and Thuraya Rkhayes (2026) “Weak Derivatives and Their Role in the Construction of Sobolev Spaces”, African Journal of Advanced Pure and Applied Sciences , 5(3), pp. 216–229. Available at: https://www.aaasjournals.com/index.php/ajapas/article/view/2127 (Accessed: 20 September 2026).