Nantomah, Kwara, Gregory Abe-I-Kpeng, and Sunday Sandow. “Inequalities for Means Regarding the Trigamma Function”. Journal of Nepal Mathematical Society 6, no. 2 (February 26, 2024): 67–73. Accessed May 18, 2024. https://nepjol.info/index.php/jnms/article/view/63030.