1. A primer on connectivity;Alexander,1981
2. Applied Nonlinear Analysis;Aubin,1987
3. Set-valued Analysis;Aubin,1991
4. On the solution set of differential inclusions;Bader;Set-Valued Anal.,2001
5. Équilibres dans les ensembles non-convexes;Ben-El-Mechaiekh;C. R. Acad. Sci. Paris Sér. I,1995