An analysis of inefficiencies in banking: a stochastic cost frontier approach
研究了美国银行企业的X-低效率特性，发现控制规模差异后，小型银行平均效率低于大型银行，且低效率随时间下降，但与小型银行股票收益显著相关。
This paper examines the properties of X-inefficiencies in U.S. banking firms. We find that, after controlling for scale differences, the average small size banking firm is less efficient than the aerate large firm. Smaller firms also exhibit higher variation in X-inefficiencies than their larger counterparts. X-inefficiency on average appears to be declining over time. However, the rank ordering of X-inefficiency is significantly correlated with smaller banking firms' stock returns. ; Published in FRBSF Economic Review (1996 no. 2, p. 16-26)