“Pointwise Approximation of Piecewise Convex Function in L_p, Quasi Normed Spaces”, JUBPAS, vol. 29, no. 3, pp. 145–153, Dec. 2021, Accessed: Apr. 19, 2025. [Online]. Available: https://journalofbabylon.com/index.php/JUBPAS/article/view/3888