@book{37282,
	author = {Praag, Bernard M. S. van. and Ferrer-i-Carbonell, Ada.},
	title = {Happiness quantified},
	publisher = {Oxford University Press,},
	year = {2008.},
	address = {Oxford :},
	edition = {Rev. ed.},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780199226146.001.0001}
}