2000
R. Westermann, C.R. Johnson, T. Ertl.
A Level-Set Method for Flow Visualization, In Proceeding of IEEE Visualization 2000, IEEE Computer Society, Salt Lake City pp. 147--154. 2000.
1998
R.T. Whitaker.
A Level-Set Approach to 3D Reconstruction From Range Data, In International Journal of Computer Vision, Vol. 29, No. 3, pp. 203--231. 1998.