@book{157635,
	author = {Dufter, Andreas. and ebrary, Inc.},
	title = {Describing and modeling variation in grammar},
	publisher = {Mouton de Gruyter,},
	year = {c2009.},
	series = {Trends in linguistics. Studies and monographs,},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10329857}
}