1. Adams, W.Y., Adams, E.W., 1991. Archaeological Typology and Practical Reality. A Dialectical Approach to Artifact Classification and Sorting, Cambridge.
2. Adler, K., Kampel, M., Kastler, R., Penz, M., Sablatnig, R., Hlavackova-Schindler, K., 2001. Computer aided classification of ceramics – achievements and problems. In: Börner, W., Dollhofer, L. (Eds.), Proc. 6th Internat. Workshop on Archaeology and Computers, Vienna, Austria, pp. 3–12.
3. Andraschko, F.M, Krekeler, A., Schliep-Andraschko, N., 1990. Terminologie, Klassifikation und computergestützte Bearbeitung der Keramik des 1. Jahrtausends v. Chr. vom Westkom auf Elephantine, Oberägypten. In: Teegen, W.R, Andraschko, F.M. (Eds.), Gedenkschrift für Jürgen Driehaus, pp. 327–338.
4. On the measurement of curvature in a quantized environment;Bennett;IEEE Trans. Comput.,1975
5. Active, optical range imaging sensors;Besl;Machine Vision Appl.,1988