@article {9939,
	title = {A Mechanism-Based Approach to the Identification of Age-Period-Cohort Models},
	journal = {Sociological Methods \& Research},
	volume = {36},
	number = {3},
	year = {2008},
	pages = {362-401},
	url = {http://smr.sagepub.com/},
	author = {Christopher Winship and David J. Harding}
}
