Andrica, D., I. Raşa, and Gh. Toader. “On Some Inequalities Involving Convex Sequences”. Anal. Numér. Théor. Approx. 13, no. 1 (February 1, 1984): 5–7. Accessed April 20, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1984-vol13-no1-art1.