Art. 91 CISG
(1) This Convention is open for signature at the concluding meeting of the United Nations Conference on Contracts for the International Sale of Goods and will remain open for signature by all States at the Headquarters of the United Nations, New York until 30 September 1981.
(2) This Convention is subject to ratification, acceptance or approval by the signatory States.
(3) This Convention is open for accession by all States which are not signatory States as from the date it is open for signature.
(4) Instruments of ratification, acceptance, approval and accession are to be deposited with the Secretary-General of the United Nations.
Overview of case law on Art. 91 CISG: UNCITRAL Digest
The UNCITRAL Digest on the CISG can be used as a starting point to discover the relevant case law on this article.