Feng Qi, “Complete monotonicity of functions involving the $q$ q -trigamma and ${q}$ q -tetragamma functions”, RACSAM, 109, no. 2, 2015, 419
Feng Qi, Wen-Hui Li, “A LOGARITHMICALLY COMPLETELY MONOTONIC FUNCTION INVOLVING THE RATIO OF GAMMA FUNCTIONS”, jaac, 5, no. 4, 2015, 626
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, Bai-Ni Guo, “Complete monotonicity of divided differences of the di- and tri-gamma functions with applications”, Georgian Mathematical Journal, 23, no. 2, 2016, 279
Mansour Mahmoud, Ravi P. Agarwal, “Bounds for Bateman's G-function and its applications”, Georgian Mathematical Journal, 23, no. 4, 2016, 579
Feng Qi, “Integral representations and complete monotonicity related to the remainder of Burnside’s formula for the gamma function”, Journal of Computational and Applied Mathematics, 268, 2014, 155
Feng Qi, Cristinel Mortici, “Some inequalities for the trigamma function in terms of the digamma function”, Applied Mathematics and Computation, 271, 2015, 502
Feng Qi, “Completely monotonic degree of a function involving trigamma and tetragamma functions”, AIMS Mathematics, 5, no. 4, 2020, 3391
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
Bai-Ni Guo, Jiao-Lian Zhao, Feng Qi, “A completely monotonic function involving the tri- and tetra-gamma functions”, Mathematica Slovaca, 63, no. 3, 2013, 469