//-->
Classifying dual role variables in DEA : the case of VRS
Ghiyasi, Mojtaba, (2021)
A new non-radial directional distance model for data envelopment analysis problems with negative and flexible measures
Tavana, Madjid, (2021)
Finding the single efficient unit in data envelopment analysis with flexible measures
Yang, Jiawei, (2023)
On classifying inputs and outputs in DEA : a revised model
Toloo, Mehdi, (2009)
Comment on "A comparison of parametric and non-parametric distance functions (by Tim Coelli and Sergio Perelman)"
Toloo, Mehdi, (2006)
On classifying inputs and outputs in DEA: A revised model