1. The sharpness of functions on sets;Burke,1989
2. Convex Analysis and Variational Problems;Ekeland,1976
3. Finite perturbation of convex programs;Ferris,1988
4. Finite perturbation of convex programs;Ferris,1989
5. A simple characterization of solution sets of convex programs;Mangasarian;Oper. Res. Lett.,1988