- Huannan SHİ, Pei WANG, Jian ZHANG, Wei-shih DU, “Notes on judgment criteria of convex functions of several variables”, Results in Nonlinear Analysis, 4, № 4, 2021, 235
- Ravi Prakash Agarwal, Erdal Karapinar, Marko Kostić, Jian Cao, Wei-Shih Du, “A Brief Overview and Survey of the Scientific Work by Feng Qi”, Axioms, 11, № 8, 2022, 385