Senlin Guo, “Some conditions for a class of functions to be completely monotonic”, J Inequal Appl, 2015, № 1, 2015, 11
Feng Qi, Xiao-Jing Zhang, “AN INTEGRAL REPRESENTATION, SOME INEQUALITIES, AND COMPLETE MONOTONICITY OF THE BERNOULLI NUMBERS OF THE SECOND KIND”, Bulletin of the Korean Mathematical Society, 52, № 3, 2015, 987
Feng Qi, Bai‐Ni Guo, Mathematical Analysis and Applications, 2018, 101
Feng Qi, Wen-Hui Li, “A LOGARITHMICALLY COMPLETELY MONOTONIC FUNCTION INVOLVING THE RATIO OF GAMMA FUNCTIONS”, jaac, 5, № 4, 2015, 626
Feng Qi, “Completely monotonic degree of a function involving trigamma and tetragamma functions”, AIMS Mathematics, 5, № 4, 2020, 3391
Bai-Ni Guo, Jiao-Lian Zhao, Feng Qi, “A completely monotonic function involving the tri- and tetra-gamma functions”, Mathematica Slovaca, 63, № 3, 2013, 469
Feng Qi, Bai-Ni Guo, “Integral representations and complete monotonicity of remainders of the Binet and Stirling formulas for the gamma function”, RACSAM, 111, № 2, 2017, 425
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, 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, № 1, 2013, 542