@article{Glymour1988,
	title = {Latent variables, causal models and overidentifying constraints},
	author = {Clark Glymour and Peter Spirtes},
	journal = {Journal of Econometrics},
	month = {00},
	number = {1-2},
	pages = {175--198},
	url = {http://www.sciencedirect.com/science/article/B6VC0-4582D3P-4N/2/fd657420783528d85f86eb17585db2a4},
	volume = {39},
	year = {1988},
	biburl = {http://www.bibsonomy.org/bibtex/208cef078f4abb63b8d0b0167bada5858/smicha},
	description = {Journal of Econometrics},
	keywords = {imported }
}