Morita H (2003). “Analysis of Economies of Scope by Data Envelopment Analysis: Comparison of Efficient Frontiers.” International Transactions in Operational Research 10(4): 393-402.
Morita H (2003). “Analysis of Economies of Scope by Data Envelopment Analysis: Comparison of Efficient Frontiers.” International Transactions in Operational Research 10(4): 393-402.