联合国国际货物销售合同公约(英文)
Article 21
(1) A late acceptance is nevertheless effective as an acceptance if without delay the offeror orally so informs the offeree or dispatches a notice to that effect.
(2) If a letter or other writing containing a late acceptance shows that it has been sent in such circumstances that if its transmission had been normal it would have reached the offeror in due time, the late acceptance is effective as an acceptance unless, without delay, the offeror orally informs the offeree that he considers his offer as having lapsed or dispatches a notice to that effect.
Article 22
An acceptance may be withdrawn if the withdrawal reaches the offeror before or at the same time as the acceptance would have become effective.
Article 23
A contract is concluded at the moment when an acceptance of an offer becomes effective in accordance with the provisions of this Convention.
Article 24
For the purposes of this Part of the Convention, an offer, declaration of acceptance or any other indication of intention "reaches" the addressee when it is made orally to him or delivered by any other means to him personally, to his place of business or mailing address or, if he does not have a place of business or mailing address, to his habitual residence.
PART III SALE OF GOODS
Chapter I GENERAL PROVISIONS
Article 25
A breach of contract committed by one of the parties is fundamental if it results in such detriment to the other party as substantially to deprive him of what he is entitled to expect under the contract, unless the party in breach did not foresee and a reasonable person of the same kind in the same circumstances would not have foreseen such a result.
Article 26
A declaration of avoidance of the contract is effective only if made by notice to the other party.
Article 27
Unless otherwise expressly provided in this Part of the Convention, if any notice, request or other communication is given or made by a party in accordance with this Part and by means appropriate in the circumstances, a delay or error in the transmission of the communication or its failure to arrive does not deprive that party of the right to rely on the communication.