Journal of productivity analysis. 2012;37(3):277-293. doi: 10.1007/s11123-011-0261-z Q21.82025
Profit efficiency in the European Union banking industry: a directional technology distance function approach
欧盟银行业的利润效率：一种定向技术距离函数方法
DOI: 10.1007/s11123-011-0261-z
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