| 1. |
European Report
1991 : MAR 13, No. 1660, p.2
|
1991 |
|
|
| 2. |
Journal of Common Market Studies
1995 : VOL. 33, p. 119-138
|
1995 |
Laffan, B.
|
|
| 3. |
BTS - Büro-Technik-Systeme
1990 : VOL. 41:9, p. 32-34
|
1990 |
|
|
| 4. |
Environmental and Resource Economics
2002 : JUL, VOL. 22:3, p. 469-471
|
2002 |
Jebjerg, L.
Lando, H.
|
|
