16 April 1998
| Title | Language | Date |
|---|---|---|
| Kazachstan (Overeenkomst van 16.04.1998) | Dutch | 16-04-1998 |
| Kazachstan (Overeenkomst van 16.04.1998) | Dutch | 16-04-1998 |
| Kazakhstan (Treaty of 16.04.1998) | English | 16-04-1998 |
| Kazakhstan (Treaty of 16.04.1998) | English | 16-04-1998 |
