@book{228649,
	author = {Jessen, Michael. and ebrary, Inc.},
	title = {Phonetics and phonology of tense and lax obstruents in German},
	publisher = {John Benjamins Pub. Co.,},
	year = {c1998.},
	series = {Studies in functional and structural linguistics,},
	address = {Amsterdam ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10492646}
}