On the relative distances of nine or ten points in the boundary of a plane convex body. - Zhanjun Su; Sipeng Li; Jian Shen; Liping Yuan (Discret. Appl. Math., 2012)

On the relative distances of eleven points in the boundary of a plane convex body. - Zhanjun Su; Xianglin Wei; Sipeng Li; Jian Shen (Discret. Math., 2014)