@incollection {371044,
	title = {Conceptual tools for causal analysis in the social sciences.},
	booktitle = {Causality and probability in the sciences},
	year = {2007},
	pages = {197{\textendash}213},
	publisher = {College Publications},
	address = {London},
	isbn = {1904987354},
	author = {Weber, Erik},
	editor = {Russo, Federica and Williamson, Jon}
}
