WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/7701,
	  title     = {Characterizations of Star-Shaped, L-Convex, and Convex Polygons},
	  author    = {Thomas Shermer and  Godfried T. Toussaint},
	  country	= {},
	  institution	= {},
	  abstract     = {A chord of a simple polygon P is a line segment [xy]
that intersects the boundary of P only at both endpoints x and y. A
chord of P is called an interior chord provided the interior of [xy] lies
in the interior of P. P is weakly visible from [xy] if for every point v
in P there exists a point w in [xy] such that [vw] lies in P. In this
paper star-shaped, L-convex, and convex polygons are characterized
in terms of weak visibility properties from internal chords and starshaped
subsets of P. A new Krasnoselskii-type characterization of
isothetic star-shaped polygons is also presented.},
	    journal   = {International Journal of Computer and Information Engineering},
	  volume    = {7},
	  number    = {1},
	  year      = {2013},
	  pages     = {121 - 127},
	  ee        = {https://publications.waset.org/pdf/7701},
	  url   	= {https://publications.waset.org/vol/73},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 73, 2013},
	}