L.M. Lorigo, O. Faugeras, W.E.L. Grimson, R. Keriven, R. Kikinis, A. Nabavi, C.-F. Westin,
Codimension-two geodesic active contours for the segmentation of tubular structures computer vision and pattern recognition. ,vol. 1, pp. 444- 451 ,(2000) ,
10.1109/CVPR.2000.855853