Endogenous Growth and Entrepreneurial Activity in Cities
Recent theories of economic growth have stressed the role of externalities in generating growth. Using data from the Census Bureau that tracks all employers in the whole U.S. private sector economy, the authors examine the impact of these externalities, as measured by entrepreneurial activity, on employment growth in Local Market Areas.
Link
http://www.ces.census.gov/index.php/ces/1.00/cespapers?down_key=101665#search=%22Endogenous%20Growth%20and%20Entrepreneurial%20Activity%20in%20Cities%22