Land A, MF Shutler and HA Kirthisingha (1990). “Branch Operation. An Investigation Using DEA and Regression.? in Proceedings of IFORS International Conference on Operational Research, Pergamon Press plc, Oxford, UK: 261.

Land A, MF Shutler and HA Kirthisingha (1990). “Branch Operation. An Investigation Using DEA and Regression.? in Proceedings of IFORS International Conference on Operational Research, Pergamon Press plc, Oxford, UK: 261.

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