1. Suda, H.: Future factory automation system formulated in Japan. Techno Japan 22, 15–25 (1989)
2. Christensen, J.: HMS: initial architecture and standards directions. In: Proceedings of the 1st European Conference on Holonic Manufacturing Systems, Hannover, pp. 1–20 (1994)
3. Fletcher, M., Garcia-Herreros, E., Christensen, J., Deen, S., and Mittmann, R.: An open architecture for holonic cooperation and autonomy. In: Proceedings of the 11th International Workshop on Database and Expert Systems Applications, pp. 224–230 (2000)
4. Werner, B.: Object-oriented extensions for IEC 61131-3. IEEE Ind. Electron. Mag. 3(4), 36–39 (2009)
5. Vyatkin, V., Christensen, J.H., Lastra, J.L.M.: OOONEIDA: an open, object-oriented knowledge economy for intelligent industrial automation. IEEE Trans. Industr. Inf. 1(1), 4–17 (2005)