P. Bremer, H. Edelsbrunner, B. Hamann, and V. Pascucci, “A multi-resolution data structure for two-dimensional Morse-Smale functions,” in Proceedings of the 14th IEEE Conference on Visualization , Seattle, WA, USA , 2003, pp. 139–146.
LibreCat: https://research-explorer.ista.ac.at/record/3997
DOI: 10.1109/VISUAL.2003.1250365