The Structure of Technology in a Multioutput Branch Banking Firm
构建并估计了多产出银行的成本函数，以区分规模经济与网络密度经济，发现小银行网络密度经济显著，大银行存在规模不经济。
We formulate and estimate a multioutput bank's cost function amenable for distinguishing between economies of scale and economies of network density. We find significant returns to network density, especially for smaller banks. Diseconomies of scale are found for the larger banks, whereas the hypothesis of constant returns to scale could not be rejected for the smaller banks.