Qi F, Wang S-H. Complete monotonicity, completely monotonic degree, integral representations, and an inequality related to the exponential, trigamma, and modified Bessel functions. GJMA [Internet]. 2014 Jun. 23 [cited 2024 Nov. 25];2(3):91-7. Available from: https://sciencepubco.com/index.php/GJMA/article/view/2919