Comparative study on efficiency performance of listed coal mining companies in China and the US
| Year of publication: |
2009
|
|---|---|
| Authors: | Fang, Hong ; Wu, Junjie ; Zeng, Catherine |
| Published in: |
Energy policy. - Oxford : Elsevier, ISSN 0301-4215, ZDB-ID 1862959. - Vol. 37.2009, 12, p. 5140-5148
|