Thomas Shermer and  Godfried T. Toussaint,  Characterizations of Star-Shaped, L-Convex, and Convex Polygons.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 73(1). 121 - 127
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/7701.