1. Speray, D.; Kennon, S.: Volume Probes - Interactive Data Exploration on Arbitrary Grids. Computer Graphics, 24:5–12, 1990.
2. Wilhelms, J.; Challinger, J.; Alper, N.; Ramamoorthy, S.; Vaziri, A.: Direct Volume Rendering of Curvilinear Volumes. Computer Graphics 24(5):41–47, 1990.
3. Kaufman, A.; Höhne, K.; Krüger, W.; Rosenblum, L.; Schröder, P.: Research Issues in Volume Visualization. IEEE Computer Graphics & Applications, 14(2):63–67, 1994.
4. Ellsiepen, P.: Parallel Isosurfacing in Large Unstructured Datasets. In: Göbel, M.; Müller, H.; Urban, B. (eds.): Visualisation in Scientific Computing. pp. 9–23, Springer Verlag, Wien, 1995.
5. Lorenson, W.; Cline, H.: Marching Cubes: A high resulution 3D surface construction algorithm. Computer Graphics, 21(4):163–169, 1987.