1. LNCS;D. Blostein,1995
2. Proceedings of International Workshop on Graphics Recognition, The Pennsylvania State University, PA, USA, August 1995.
3. LNCS,1996
4. T. Kanungo, R. Haralick, and D. Dori. Understanding engineering drawings: A survey. In Proceedings International Workshop on Graphics Recognition, pages 119–130, The Pennsylvania State University, PA, USA, August 1995.
5. LNCS;B. Messmer,1996