The mechanism for the graduated refund of own resources accruing from VAT or GNP-based financial contributions introduced for Greece up to 1985 by Article 127 of the 1979 Act of Accession and for Spain and Portugal up to 1991 by Articles 187 and 374 of the 1985 Act of Accession shall apply to the own resources accruing from VAT and the GNP-based resources referred to in Article 2 (1) (c) and (d) of this Decision.