Rufián-Lizana, A.; Chalco-Cano, Y.; Ruiz-Garzón, G.; … - In: TOP: An Official Journal of the Spanish Society of … 22 (2014) 2, pp. 771-783
Jeyakumar (Methods Oper. Res. 55:109–125, <CitationRef CitationID="CR12">1985</CitationRef>) and Weir and Mond (J. Math. Anal. Appl. 136:29–38, <CitationRef CitationID="CR34">1988</CitationRef>) introduced the concept of preinvex function. The preinvex functions have some interesting properties. For example, every local minimum of a preinvex function is a global minimum and...</citationref></citationref>
