1. Computer Aided design in Metal Forming Systems;Boër;Annals of the CIRP,1984
2. Design and Manufacture of Dies and Molds;Altan;Annals of the CIRP,1987
3. Noack, P., 1973, Computer-Aided Determination of Operation Sequence and Costs in Cold Forging of Rotation-Symmetric Workpieces, SME Technical Paper (MF73-141).
4. Computer-Aided Production Planning in Cold Forging;Rebholz;Annals of the CIRP,1980
5. Rebholz, M., 1981, Interactive Programming System for Developing Layout for Cold Bulk Forming, report No. 60, Metal Forming Institute, University of Stuttgart, (in German).