Fukuyama H (1996). “Returns to Scale and Efficiency of Credit Associations in Japan: A Nonparametric Frontier Approach.” Japan and the World Economy 8(3): 259-277.

Fukuyama H (1996). “Returns to Scale and Efficiency of Credit Associations in Japan: A Nonparametric Frontier Approach.” Japan and the World Economy 8(3): 259-277.

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