1
Published: c2009.
Superior document: The Kauffman Foundation series on innovation and entrepreneurship
2
3
Published: 2007,, c2004.
Links: Get full text
4
Published: 2010.
Superior document: National Bureau of Economic Research conference report
Links: Get full text
5
Published: 2012.
Superior document: National Bureau of Economic Research conference report
Links: Get full text
6
Published: c2006.
Links: Get full text
7
Published: 2006.
Links: Get full text