Pateiro-López, Beatriz, and Alberto Rodríguez-Casal. “Generalizing the Convex Hull of a Sample: The R Package Alphahull”. Journal of Statistical Software 34, no. 5 (April 16, 2010): 1–28. Accessed November 21, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v034i05.