@article{Douglas1993,
	title = {`Voting with your feet' and the quality of life index : A simple non-parametric approach applied to Canada},
	author = {Stratford Douglas and Howard J. Wall},
	journal = {Economics Letters},
	number = {2-3},
	pages = {229--236},
	url = {http://www.sciencedirect.com/science/article/B6V84-4590VRK-KD/2/23c9662f40ab63c6e748f889c13c3ca6},
	volume = {42},
	year = {1993},
	biburl = {http://www.bibsonomy.org/bibtex/2378737dc3f595090003ecb97cd36165f/smicha},
	description = {Economics Letters},
	keywords = {imported }
}