15 November 2000 | Publisher: UN General Assembly | Document type: Multilateral Treaties/Agreements
18 December 1990 | Publisher: UN General Assembly | Document type: Multilateral Treaties/Agreements
24 November 1977 | Publisher: Council of Europe | Document type: Multilateral Treaties/Agreements
24 June 1975 | Publisher: International Labour Organization (ILO) | Document type: Multilateral Treaties/Agreements