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2. Application for a patent on the topic:;Bilberg,1989
3. Allan-Bradley International Europe: Cell controllers in action;Evans,1987
4. Harrell, Charles: PROMOD, A Framework and Methodology for Simulating Manufacturing Systems + Reference Guide. Ph.D. thesis, Laboratory of Process and Production Engineering, Institute of Manufacturing Engineering, Technical University of Denmark, 1988, 152 pages.
5. FLEXCON DNC communication ver. 1.0. System description and users manual;Siggaard,1989