Qi, Feng, Cao, Jian and Niu, Da-Wei (2007) A Generalization of Van Der Corput's Inequality. Research report collection, 10 (Supp).

Qi, Feng, Niu, Da-Wei and Cao, Jian (2007) A General Generalization of Jordan's Inequality and a Refinement of L. Yang's Inequality. Research report collection, 10 (Supp).

Qi, Feng, Niu, Da-Wei and Cao, Jian (2006) Logarithmically Completely Monotonic Functions Involving Gamma and Polygamma Functions. Research report collection, 9 (1).

Qi, Feng, Cao, Jian and Niu, Da-Wei (2006) Four Logarithmically Completely Monotonic Functions Involving Gamma Function and Originating from Problems of Traffic Flow. Research report collection, 9 (3).