G. Bertrand and G. Malandain, A new characterization of three-dimensional simple points, Pattern Recognition Letters, vol.15, issue.2, pp.169-175, 1994.
URL : https://hal.archives-ouvertes.fr/inria-00615050

R. H. Bing, Some aspects of the topology of 3-manifolds related to the Poincaré conjecture, pp.93-128, 1964.

P. Dokládal, C. Lohou, L. Perroton, and G. Bertrand, Liver blood vessels extraction by a 3-D topological approach, Medical Image Computing and Computer-Assisted Intervention -MICCAI'99, 2nd International Conference, Proceedings, vol.1679, pp.98-105, 1999.