Dutta, Joydeep; Tammer, Christiane - In: Mathematical Methods of Operations Research 64 (2006) 3, pp. 521-540
and the approximate subdifferential by Ioffe using a non-convex scalarization scheme. Finally, we apply the results for … deriving necessary conditions for weakly efficient solutions of non-convex location problems. Copyright Springer-Verlag 2006 …