共 8 条
- [7] The Effects of Sulfur Dioxide Controls on Productivity Change in the U.S. Electric Power Industry[J] . The Review of Economics and Statistics . 1994 (3)
- [8] Multilateral Productivity Comparisons When Some Outputs are Undesirable: A Nonparametric Approach[J] . The Review of Economics and Statistics . 1989 (1)