1. E. Artin: The gamma function. Holt, Rinehart and Winston, 1964.
2. I. B´ar´any: The densest (n+2) set in Rn. In: Intuitive Geometry (1991), Coll.Math. Soc. J´anos Bolyai, No 63, North Holland, 1997.
3. I. B´ar´any, Z. F¨uredi: Approximation of the sphere by polytopes having few vertices. Proc. Amer. Math. Soc.,102 (1988), 651–659.
4. U. Betke, P. Gritzmann, J. M. Wills: Slices of L. Fejes T´oth’s sausage conjecture.Mathematika, 29 (1982), 194–201
5. T. Bonnesen, W. Fenchel. Theory of Convex bodies. BCS Assoc., Moscow (Idaho), 1987. Translated from German: Theorie der konvexen K¨orper, Springer, 1934.