| Article ID: | iaor19992690 |
| Country: | Netherlands |
| Volume: | 105 |
| Issue: | 3 |
| Start Page Number: | 622 |
| End Page Number: | 625 |
| Publication Date: | Mar 1998 |
| Journal: | European Journal of Operational Research |
| Authors: | Fre Rolf, Li Sung Ko |
This paper discusses inner and outer approximation to a technology given by a data set of prices and quantities.