Tsekouras KD, CJ Pantzios and G Karagiannis (2004). “Malmquist Productivity Index Estimation with Zero-Value Variables: the Case of Greek Prefectural Training Councils.” Int J Prod Econ 89(1): 95-106.
Tsekouras KD, CJ Pantzios and G Karagiannis (2004). “Malmquist Productivity Index Estimation with Zero-Value Variables: the Case of Greek Prefectural Training Councils.” Int J Prod Econ 89(1): 95-106.