@inproceedings{SPLC-2011-ThumKES,
	author        = "Thomas Thüm and Christian Kästner and Sebastian Erdweg and Norbert Siegmund",
	booktitle     = "{Proceedings of the 15th International Software Product Line Conference}",
	doi           = "10.1109/SPLC.2011.53",
	isbn          = "978-1-4577-1029-2",
	pages         = "191--200",
	publisher     = "{IEEE}",
	title         = "{Abstract Features in Feature Modeling}",
	year          = 2011,
}