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, Dongkyu Lim, “Monotonicity properties for a ratio of finite many gamma functions”, Adv Differ Equ, 2020, no. 1, 2020, 193
Feng Qi, Mansour Mahmoud, “Bounding the gamma function in terms of the trigonometric and exponential functions”, Acta Sci. Math., 83, no. 1-2, 2017, 125
Lichun Liang, Bin Zhao, Aibing Li, “Some inequalities involving the polygamma functions”, J Inequal Appl, 2019, no. 1, 2019, 54
Julyan Arbel, Olivier Marchal, Bernardo Nipoti, “On the Hurwitz zeta function with an application to the beta-exponential distribution”, J Inequal Appl, 2020, no. 1, 2020, 89
Feng Qi, Ravi P. Agarwal, “On complete monotonicity for several classes of functions related to ratios of gamma functions”, J Inequal Appl, 2019, no. 1, 2019, 36
Feng Qi, “Complete Monotonicity for a New Ratio of Finitely Many Gamma Functions”, Acta Math Sci, 42, no. 2, 2022, 511
Feng Qi, Bai-Ni Guo, “From inequalities involving exponential functions and sums to logarithmically complete monotonicity of ratios of gamma functions”, Journal of Mathematical Analysis and Applications, 493, no. 1, 2021, 124478
Xiaodong Cao, Ruopeng Wang, “Some inequalities for the ratio of gamma functions”, J Inequal Appl, 2015, no. 1, 2015, 178
Feng Qi, Cristinel Mortici, “Some inequalities for the trigamma function in terms of the digamma function”, Applied Mathematics and Computation, 271, 2015, 502