@article{GlaeserGottliebWealth,
	title = {The Wealth of Cities: Agglomeration Economies and Spatial Equilibrium in the United States},
	author = {Edward L. Glaeser and Joshua D. Gottlieb},
	year = {2009},
	journal = {Journal of Economic Literature},
	volume = {47},
	number = {4},
	month = {December},
	pages = {983-1028}
}