Article 52 International Covenant on Civil and Political Rights (ICCPR)
1. Irrespective of the notifications made under article 48, paragraph 5, the Secretary-General of the United Nations shall inform all States referred to in paragraph I of the same article of the following particulars:
(a) Signatures, ratifications and accessions under article 48;
(b) The date of the entry into force of the present Covenant under article 49 and the date of the entry into force of any amendments under article 51.
See also: Article 51 ICCPR