Carlo Arcelli Gabriella Sanniti di Baja Luca Serino A parallel algorithm to skeletonize the distance transform of 3D objects. 666-672 2009 27 Image Vision Comput. 6 http://dx.doi.org/10.1016/j.imavis.2008.07.014 db/journals/ivc/ivc27.html#ArcelliBS09