1. KEDDC - A Computer Aided Analysis and Design Package for Control Systems;Schmid,1985
2. Schmid, C. (1984). KEDDC - A computer-aided analysis and design package for control systems. Proceed. Workshop “Computer aided control system design”, Institute of Measurement and Control, Brighton (UK), pp. 50–55.
3. Schmid, C., H. Unbehauen (1979). KEDDC, a general purpose CAD software system for application in control engineering. Prep. 2nd IFAC/IFIP Symposium on Software for Computer Control (SOCOCO), Prag, paper C-V.
4. Unbehauen, H., C. Schmid, F. Böttiger, B. Bauer, B. Göhring (1975). KEDDC, ein kombiniertes Prozeßrechnerprogrammsystem zum Entwurf und Einsatz von DDC-Algorithmen. PDV-Bericht, KFK-PDV 37.