| Contracting Parties | Signature | Ratification (Instrument deposited on) |
Entry into force |
| AUSTRIA | 03.09.1985 | 27.05.1987 | 01.08.1987 |
| BELGIUM | 03.09.1985 | 02.03.1987 | 01.06.1987 |
| SPAIN | 03.09.1985 | 11.05.1987 | 01.08.1987 |
| FRANCE | 03.09.1985 | 17.12.1986 | 01.03.1987 |
| GREECE | 03.09.1985 | 03.06.2014 | 01.09.2014 |
| ITALY | 03.09.1985 | 24.07.1989 | 01.10.1989 |
| LUXEMBOURG | 03.09.1985 | / | / |
| NETHERLANDS | 03.09.1985 | 28.11.1986 | 01.03.1987 |
| SWITZERLAND | 03.09.1985 | / | / |