F. Durand, G. Drettakis, C. [. Puech, E. De-floriani, . [. Puppo et al., The visibility skeleton, Proceedings of the 24th annual conference on Computer graphics and interactive techniques , SIGGRAPH '97, pp.89-100363, 1993.
DOI : 10.1145/258734.258785
URL : https://hal.archives-ouvertes.fr/inria-00510088