Study of efficiency and productivity growth in opencast and underground coal mining in India: a DEA analysis
| Year of publication: |
2002
|
|---|---|
| Authors: | Kulshreshtha, Mudit ; Parikh, Jyoti K. |
| Published in: |
Energy economics. - Amsterdam : Elsevier, ISSN 0140-9883, ZDB-ID 795279x. - Vol. 24.2002, 5, p. 439-454
|