References
- G. H. Meisters , "Polygons have ears"
 
American Mathematical Monthly, June/July, 1975, pp. 648-651.- M.de Berg, M. van Kreveld, M. Overmars, M.Schwarzkopf , "Guarding and Triangulations"
 Computational Geometry Algorithms and Applications
 
Springer-Verlag  ,1997, pp. 46-49- J. O'Rourke
Computational Geometry in C
Cambridge University Press, 1994.
- Web References
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