Podinovski VV (2004). “Bridging the Gap between the Constant and Variable Returns-to-Scale Models: Selective Proportionality in Data Envelopment Analysis.” JORS 55(3): 265-276.
Podinovski VV (2004). “Bridging the Gap between the Constant and Variable Returns-to-Scale Models: Selective Proportionality in Data Envelopment Analysis.” JORS 55(3): 265-276.