@inproceedings{SPLC-2011-Broy11a,
	author        = "Manfred Broy",
	booktitle     = "{Proceedings of the 15th International Software Product Line Conference}",
	doi           = "10.1109/SPLC.2011.68",
	isbn          = "978-1-4577-1029-2",
	pages         = "3--7",
	publisher     = "{IEEE}",
	title         = "{The Role of Requirements and Specification in Product Line Engineering}",
	year          = 2011,
}