Feng Qi, Qiu-Ming Luo, “Bounds for the ratio of two gamma functions: from Wendel’s asymptotic relation to Elezović-Giordano-Pečarić’s theorem”, J Inequal Appl, 2013, no. 1, 2013, 542
Feng Qi, Cristinel Mortici, “Some inequalities for the trigamma function in terms of the digamma function”, Applied Mathematics and Computation, 271, 2015, 502
Zhen-Hang Yang, Yu-Ming Chu, Xiao-Jing Tao, “A Double Inequality for the Trigamma Function and Its Applications”, Abstract and Applied Analysis, 2014, 2014, 1
Andy S. I. Kim, M. P. Wand, “The explicit form of expectation propagation for a simple statistical model”, Electron. J. Statist., 10, no. 1, 2016
Bai-Ni Guo, Feng Qi, Jiao-Lian Zhao, Qiu-Ming Luo, “Sharp Inequalities for Polygamma Functions”, Mathematica Slovaca, 65, no. 1, 2015, 103
Zhenhang Yang, Jing-Feng Tian, “A comparison theorem for two divided differences and applications to special functions”, Journal of Mathematical Analysis and Applications, 464, no. 1, 2018, 580
Li-Chun Liang, Li-Fei Zheng, Aying Wan, “A class of completely monotonic functions involving the polygamma functions”, J Inequal Appl, 2022, no. 1, 2022, 12
Hanaa M. Zayed, Teodor Bulboacă, “Geometric characterization of the generalized Lommel–Wright function in the open unit disc”, J Inequal Appl, 2024, no. 1, 2024, 32
Zhen-Hang Yang, “Some properties of the divided difference of psi and polygamma functions”, Journal of Mathematical Analysis and Applications, 455, no. 1, 2017, 761
Feng Qi, Wen-Hui Li, “A LOGARITHMICALLY COMPLETELY MONOTONIC FUNCTION INVOLVING THE RATIO OF GAMMA FUNCTIONS”, jaac, 5, no. 4, 2015, 626