| Article ID: | iaor20041892 |
| Country: | China |
| Volume: | 6 |
| Issue: | 2 |
| Start Page Number: | 72 |
| End Page Number: | 78 |
| Publication Date: | Jan 2002 |
| Journal: | OR Transactions |
| Authors: | Wu Wenjiang |
On the basis of the additive model with the extra constrains of weights, to distinguish whether a decision making unit is DEA efficient (C2R or C2GS2), the extra constraints and distinguishing method in this paper both are different from earlier references.