1. Z.J. Acs, and C. Armington., 2003 . The geographic concentration of new firm formation and human capital: Evidence from the cities . Center for Economic Studies Research Papers, 03 -05 .
2. The Economics of Small Firms
3. J.M. Arauzo, M. Manjon, M. Martin, and A. Segarra., 2002 . Entry and exit in Spain: Tests of the independence, symmetry and simultaneity hypotheses . Workshop: The Economics of Entrepreneurship and the Demography of Firms and Industries, Zentrum fur Europaische Wirtschaftsforschung (ZEW), Mannheim, Germany.
4. The Determinants of Regional Variation in New Firm Formation
5. New Firm Formation in the British Counties with Special Reference to Scotland