Generalized Identities and Inequalities of Čebyšev and Ky Fan Type for ∇−convex function. Journal of Prime Research in Mathematics, [S. l.], v. 18, n. 2, p. 1 – 22, 2022. Disponível em: https://jprm.sms.edu.pk/index.php/jprm/article/view/183. Acesso em: 4 feb. 2026.