@inproceedings{CASE-2007-FalkmanLA,
	author        = "Petter Falkman and Bengt Lennartson and Kristin Andersson",
	booktitle     = "{Proceedings of the Third International Conference on Automation Science and Engineering}",
	doi           = "10.1109/COASE.2007.4341688",
	isbn          = "978-1-4244-1154-2",
	pages         = "20--25",
	publisher     = "{IEEE}",
	title         = "{Specification of Production Systems using PPN and Sequential Operation Charts}",
	year          = 2007,
}