Kazuyuki Miura Machiko Azuma Takao Nishizeki Convex Drawings of Plane Graphs of Minimum Outer Apices. 1115-1128 2006 17 Int. J. Found. Comput. Sci. 5 http://dx.doi.org/10.1142/S0129054106004297 db/journals/ijfcs/ijfcs17.html#MiuraAN06