Zhen-Hang Yang, “Some properties of the divided difference of psi and polygamma functions”, Journal of Mathematical Analysis and Applications, 455, № 1, 2017, 761
Feng Qi, Dongkyu Lim, “Monotonicity properties for a ratio of finite many gamma functions”, Adv Differ Equ, 2020, № 1, 2020, 193
Feng Qi, Mansour Mahmoud, “Bounding the gamma function in terms of the trigonometric and exponential functions”, Acta Sci. Math., 83, № 1-2, 2017, 125
Lichun Liang, Bin Zhao, Aibing Li, “Some inequalities involving the polygamma functions”, J Inequal Appl, 2019, № 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, № 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, № 1, 2019, 36
Feng Qi, “Complete Monotonicity for a New Ratio of Finitely Many Gamma Functions”, Acta Math Sci, 42, № 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, № 1, 2021, 124478
Xiaodong Cao, Ruopeng Wang, “Some inequalities for the ratio of gamma functions”, J Inequal Appl, 2015, № 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