@inbook{NBERc7984,
 Crossref = "NBERglae08-1",
 title = "Small Establishments/Big Effects: Agglomeration, Industrial Organization and Entrepreneurship",
 author = "Stuart S. Rosenthal and William C. Strange",
 year = "2007",
 month = "December",
 URL = "http://www.nber.org/chapters/c7984",
}