Productivity Growth in Passenger-Bus Transportation: A Heteroskedastic Error Component Model with Unbalanced Panel Data
| Year of publication: |
1996
|
|---|---|
| Authors: | Kumbhakar, S.C. ; Bhattacharyya, A. |
| Published in: |
Empirical economics : a journal of the Institute for Advanced Studies, Vienna, Austria. - Berlin : Springer, ISSN 0377-7332, ZDB-ID 5193941. - Vol. 21.1996, 4, p. 557-574
|