@article {51,
	title = {Professional diversity and the productivity of cities},
	journal = {Nature Scientific Reports},
	volume = {4},
	year = {2014},
	month = {06/2014},
	chapter = {5393},
	doi = {10.1038/srep05393},
	url = {http://www.nature.com/srep/2014/140623/srep05393/full/srep05393.html},
	author = {Bettencourt, Luis M A and Samaniego, Horacio and Youn, HyeJin}
}
