1. Sussman, G.J., Stallman, R.M. Heuristic Techniques in Computer Aided Circuit Analysis, IEEE Trans, on Circuit and Systems, Vol. CAS-22, No. 11, 857 – 865, 1975.
2. Bobas, A., Valihora, J. A Design Automation System for Printed Circuit Board Assemblies, Proc. 14th Annual Design Automation Conference, 357 – 369, 1977.
3. Bunker, H. Anluse elektrischer Schaltplaene mit einfaachen Schaltsymbolem, in E. Triendl. (ed.) Bildverarbeitung und Mustererkennung, Informatik Fachberichete 17, Springer-Verlag, 126–132, Berlin 1978.
4. Cederberg, R.L.T. Automatic Interpretation of Hand-Drawn Electrical Schematics, Ints. Conf. on CAD and Manufacture of Electronic Components, Circuit and Systems, univ. of Sussex, 3—5th July, 1979
5. Zavidovique, B., Stammon, G. An Automated Process for Electronic Scheme Analysis, Proc. 5th ICPR, Miami, 248–250, 1980.