Fuzzy pricing of American options on stocks with known dividends and its algorithm. - Wei-Guo Zhang; Qing-Sheng Shi; Wei-Lin Xiao (Int. J. Intell. Syst., 2011)

A Class of modified BFGS Methods with Function Value Information for unconstrained Optimization. - Hao Liu; Haijun Wang; Xiao-Yan Qian; Qing-Sheng Shi (Asia Pac. J. Oper. Res., 2013)