1. On a topological characterization of compact convex point sets;Aumann;Ann. of Math.,1936
2. Y.D. Chai, A geometric inequality for certain types of compact sets in Rn, Amer. J. Math, to appear.
3. A characterization of convex bodies;Fary;Amer. Math. Monthly,1962
4. Filling Riemannian manifolds;Gromov;J. Differential Geom.,1983
5. p-convex domains in Rn;Itoh,1989