CDCECC
Bani Younis M.; Frey, G.: Formalization and Visualization of Non-binary PLC Programs. Proceedings of the 44th IEEE Conference on Decision and Control (CDC 2005) and European Control Conference (ECC 2005), pp. 8367-8372, Seville, Spain, Dec. 2005. <DOI: 10.1109/CDC.2005.1583517>