The following subparagraphs are added to Article 4 (1) of Regulation (EEC) No 1883/78:
'Where specific measures for the disposal of butter from public stocks are taken under a common market organization within the milk and milk products sector in 1987 and 1988 with reference to this provision, financing of the loss on the sale shall begin in 1989 and shall be limited to 25 % of the amount of the loss recorded during the financial year concerned. The remaining 75 % shall be financed in instalments of 25 % over the following three financial years. This financing will take place, unless unavoidably prevented, during the first three months of each year in question.
The loss on the sale shall be equal to the difference between the value of the quantities carried over, as referred to in Article 1 (1) (c) of Regulation (EEC) No 3247/81 (1), and the value of the quantities disposed of pursuant to a measure as referred to in the previous subparagraph.
The unreimbursed amounts in respect of losses so calculated shall bear interest at rates fixed pursuant to Article 5.
(1) OJ No L 327, 14. 11. 1981, p. 1.'