1. Characterizations of three-dimensional discrete holes;Bertrand,1992
2. A new topological classification of points in 3D images;Bertrand,1992
3. A simple parallel 3D thinning algorithm;Gong,1990
4. A digital fundamental group;Kong;Computer and Graphics,1989
5. Digital topology: introduction and survey;Kong;Computer Vision, Graphics, and Image Processing,1989