@article{DeWitte1986,
	title = {Functional form of engel curves for foodstuffs},
	author = {M. A. C. De Witte and J. S. Cramer},
	journal = {European Economic Review},
	month = {Aug},
	number = {4},
	pages = {909--913},
	url = {http://www.sciencedirect.com/science/article/B6V64-4CB76XN-T/1/748857b71211890b1f36f158d6341239},
	volume = {30},
	year = {1986},
	biburl = {http://www.bibsonomy.org/bibtex/2e980ad36ae97c00b06afab7365e44ec0/smicha},
	keywords = {imported }
}