@article {719206,
	title = {Endogenous Selection Bias: The Problem of Conditioning on a Collider Variable},
	journal = {Annual Review of Sociology},
	volume = {40},
	number = {1},
	year = {2014},
	pages = {31-53},
	author = {Felix Elwert and Christopher Winship}
}
@article {719201,
	title = {The Salience Of Social Contextual Factors in Appraisals of Police Interactions with Citizens: A Randomized Factorial Experiment},
	journal = {Journal of Quantitative Criminology},
	volume = {30},
	number = {4},
	year = {2014},
	pages = {599-627},
	author = {Anthony A. Braga and et al}
}
@inbook {719196,
	title = {Instrumental Variables Regression},
	booktitle = {The SAGE Handbook of Regression Analysis and Causal Inference},
	year = {2014},
	pages = {277-300},
	publisher = {SAGE Publications LTD},
	organization = {SAGE Publications LTD},
	address = {London},
	author = {Christopher Muller and Christopher Winship and Stephen L. Morgan},
	editor = {Henning Best and Christof Wolf}
}
@article {719191,
	title = {Contact and Group Structure: A Natural Experiment of Interracial College Roommate Groups},
	journal = {Organization Science},
	volume = {25},
	number = {4},
	year = {2014},
	pages = {1216-1233.},
	author = {Arjun Chakravarti and Tanya Menon and Christopher Winship}
}
@book {240236,
	title = {Counterfactuals and Causal Inference: Methods and Principles for Social Research},
	year = {2014},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	edition = {2nd},
	address = {Cambridge, UK},
	author = {Stephen L. Morgan and Christopher Winship}
}
