1. Innovation in large and small firms: an empirical analysis;Acs;American Economic Review,1988
2. Innovation and Small Firms;Acs,1990
3. Real effects of academic research;Acs;American Economic Review,1992
4. R&D spillovers and recipient firm size;Acs;Review of Economics and Statistics,1994
5. Comparative localization of academic and industrial spillovers;Adams;Journal of Economic Geography,2002