Some Fejer and Hermite-Hadamard Type Inequalities Considering ²-Convex and (σ, ²)-Convex Functions. Punjab Univ. J. Math. [Internet]. 2018 Sep. 30 [cited 2025 Jun. 29];50(3):13-24. Available from: https://pujm.pu.edu.pk/index.php/pujm/article/view/137