Jorge Urrutia. On the number of internal and external visibility edges of polygons. In CCCG. 1997.
@inproceedings{Urrutia97, title = {On the number of internal and external visibility edges of polygons}, author = {Jorge Urrutia}, year = {1997}, researchr = {https://researchr.org/publication/Urrutia97}, cites = {0}, citedby = {0}, booktitle = {CCCG}, }