1. Specification and estimation of frontier production, profit and cost functions;Aigner;Journal of Econometrics,1977
2. Angel, J.J., 1998. Consolidation in the global equity market: An historical perspective. Working Paper, Georgetown University
3. Annual Reports, 1989–1998. Annual Reports of 49 Stock and Derivative Exchanges
4. Merging markets;Arnold;Journal of Finance,1999
5. The profit–structure relationship in banking – tests of market power and efficient-structure hypotheses;Berger;Journal of Money, Credit, and Banking,1995