nonconvex plane polygon into a convex one. Matematicheskoe Prosveshchenie, 6:205–207, 1961. In Russian. Branko Grünbaum, How to convexify a polygon, Geombinatorics
Ordo-jelölésről szóló cikkeket. Suk, Andrew (2016), On the Erdős–Szekeres convexpolygon problem. Erdős Pál (1978). „Some more problems on elementary geometry”