Working Paper
The efficiency of bank branches
Mingo, John J.; Leusner, John H.; Berger, Allen N. (1994)
Finance and Economics Discussion Series , Paper 94-26

Working Paper
Solving an empirical puzzle in the capital asset pricing model
Leusner, John H.; Akhavein, Jalal D.; Swamy, P. A. V. B. (1996)
A long standing puzzle in the Capital Asset Pricing Model (CAPM) has been the inability of empirical work to validate it. This paper presents a new approach to estimating the CAPM, taking into account the differences between observable and expected returns for risky assets and for the market portfolio of all traded assets, as well as inherent nonlinearities and the effects of excluded variables. Using this approach, we provide evidence that the relation between the observable returns on stock and market portfolios is nonlinear.
Finance and Economics Discussion Series , Paper 96-14

Conference Paper
The efficiency of bank branches and implications for mergers and interstate branching
Mingo, John J.; Leusner, John H.; Berger, Allen N. (1995)
Proceedings , Paper 463