@book{46700,
	author = {Ouhalla, Jamal, and ebrary, Inc.},
	title = {Functional categories and parametric variation},
	publisher = {Routledge,},
	year = {1991.},
	series = {Theoretical linguistics},
	address = {London ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10061130}
}