Ritchie PC and JE Rowcroft (1996). “Choice of Metric in the Measurement of Relative Productivity Efficiency.” Int J Prod Econ 46-47: 433-439.
Ritchie PC and JE Rowcroft (1996). “Choice of Metric in the Measurement of Relative Productivity Efficiency.” Int J Prod Econ 46-47: 433-439.