@inbook {9963,
	title = {Heterogeneity, and Interdependence: A Test Using Survival Models},
	booktitle = {Sociological Methodology},
	year = {1986},
	publisher = {Jossey-Bass},
	organization = {Jossey-Bass},
	url = {http://www.wiley.com/bw/journal.asp?ref=0081-1750},
	author = {Christopher Winship},
	editor = {Nancy B. Tuma}
}
