Meng, Fan-Wen; Xia, Zun-Quan; Gao, Yan Generalized second-order directional derivatives for a class of nonsmooth functions. (English) Zbl 0980.90083 PU.M.A., Pure Math. Appl. 10, No. 4, 403-411 (1999). Reviewer: F.Luban (Bucuresti) MSC: 90C30 PDFBibTeX XMLCite \textit{F.-W. Meng} et al., PU.M.A., Pure Math. Appl. 10, No. 4, 403--411 (2000; Zbl 0980.90083)
Meng, Fanwen; Xia, Zunquan; Hao, Ying Second-order expansions for maximum value functions. (Chinese. English summary) Zbl 1032.90041 Pure Appl. Math. 15, No. 4, 67-70 (1999). MSC: 90C30 PDFBibTeX XMLCite \textit{F. Meng} et al., Pure Appl. Math. 15, No. 4, 67--70 (1999; Zbl 1032.90041)
Meng, Fanwen; Gao, Yan; Xia, Zunquan Second-order directional derivatives for max-type functions. (Chinese. English summary) Zbl 0923.90131 J. Dalian Univ. Technol. 38, No. 6, 621-624 (1998). MSC: 90C30 49J50 PDFBibTeX XMLCite \textit{F. Meng} et al., J. Dalian Univ. Technol. 38, No. 6, 621--624 (1998; Zbl 0923.90131)