Oguntuase, J. A., E. O. . Adeleke, and P. . Durojaye. “Hardy Type Inequalities For Superquadratic And Subquadratic Functions”. Journal of the Nigerian Mathematical Society, vol. 31, no. 1-3, Apr. 2021, pp. 119-35, https://ojs.ictp.it/jnms/index.php/jnms/article/view/754.