@article{Kokic1997,
author = {Kokic, P. and Chambers, R. and Breckling, J. and Beare, S.},
title= {A measure of production performance},
year = {1997},
doi = {10.2307/1392490},
journal = {Journal of Business & Economic Statistics},
volume = {15},
number = {4},
pages = {445--451},
}