@article{Kapetanios2006,
	title = {Choosing the optimal set of instruments from large instrument sets},
	author = {George Kapetanios},
	day = {15},
	journal = {Computational Statistics \& Data Analysis},
	month = {Nov},
	number = {2},
	pages = {612--620},
	url = {http://www.sciencedirect.com/science/article/B6V8V-4J622WP-2/1/5e14bd95d5cdcc9833d608a3ccc4021c},
	volume = {51},
	year = {2006},
	biburl = {http://www.bibsonomy.org/bibtex/248f7f63ba55c82a7c9a224f750edfb79/smicha},
	keywords = {Instrumental variables }
}