1. Spatial Econometrics: Methods and Models;Anselin,1988
2. R&D spillovers and the geography of innovation and production;Audretsch;American Economic Review,1996
3. Price competition and hospital cost growth in the United States;Bamezei;Health Economics,1999
4. Do agglomeration economies exist in the hospital services industry?;Bates;Eastern Economic Journal,2005
5. Contestable Markets and the Theory of Industry Structure;Baumol,1982