Except in so far as provided in paragraph 3, (a) in open procedures, the period for the receipt of tenders shall not be less than 40 days from the date of publication referred to in paragraph 1 of Article IX; (b) in selective procedures not involving the use of a permanent list of qualified suppliers, the period for submitting an application to be invited to tender shall not be less than 25 days from the date of publication referred to in paragraph 1 of Article IX; the period for receipt of tenders shall in no case be less than 40 days from the date of issuance of the invitation to tender.
