@article {762511,
	title = {Experimental Designs for Identifying Causal Mechanisms (with discussions)},
	journal = {ournal of the Royal Statistical Society-Series A},
	volume = {176},
	number = {1},
	year = {2013},
	pages = {5-51},
	author = {K. Imai and D. Tingley and T. Yamamoto}
}
