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Zhao, Yingxue; Meng, Xiaoge; Qiao, Han; Wang, Shouyang; Coladas Uria, Luis Characterizations of semi-prequasi-invexity. (English) Zbl 1398.26012 J. Syst. Sci. Complex. 27, No. 5, 1008-1026 (2014). MSC: 26B25 90C25 PDFBibTeX XMLCite \textit{Y. Zhao} et al., J. Syst. Sci. Complex. 27, No. 5, 1008--1026 (2014; Zbl 1398.26012) Full Text: DOI