1. 1. 81 Official Journal of the European Communities No L 1/17 COUNCIL REGULATION (EEC) No 10/81 of 1 January 1981 fixing, in respect of fruit and vegetables, the general rules for implementing the 1979 Act of Accession THE COUNCIL OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Economic Community, Having regard to the 1979 Act of Accession, and in particular Article 72 (1) thereof, Having regard to the proposal from the Commission, Whereas, pursuant to Article 74 of the Act of Acces- sion the basic price for fruit and vegetables is to be fixed in Greece, at the time of accession, taking into account the difference between the average producer prices in Greece and the Community of Nine recorded over a reference period, to be determined; whereas that reference period must be representative of real market trends; whereas the past three marketing years should be taken for this purpose, excluding periods during which prices underwent abnormal fluctuations ; Whereas the same criteria should be used to determine the difference in prices referred to in Atticle 67 of the Act of Accession and for calculating the minimum price applicable in Greece, referred to in Article 77 of that Act; Whereas Article 75 of the said Act introduced a compensatory mechanism for imports into the Community of Nine of fruit and vegetables coming from Greece for which an institutional price is fixed ; whereas the detailed rules for implementing the said mechanism should be determined ; Whereas, where the prices paid in Greece under the previous national system for citrus fruit for processing would result in fixing a minimum price higher than the common minimum price, it is appropriate to adopt the common price definitively for Greece, as provided for in Article 77 (3) of the Act of Accession, HAS ADOPTED THIS REGULATION : Article 1 Where, for calculating reference prices or fixing export refunds, the difference in prices is taken into account pursuant to Article 67 of the Act of Acces- sion, the procedure shall be as follows : (1) for price fixings relating to the period from 1 January 1981 to the end of the current marketing year, this difference shall be the difference between average producer prices in Greece and in the Community of Nine recorded during the marketing years 1977/78, 1978/79 and 1979/80, to the exclusion of years or parts of years during which abnormal prices obtained ; (2) for subsequent price fixings, this difference shall be that referred to in paragraph 1 phased down as provided for in Article 59 of the Act. Article 2 The reference period referred to in the second para- graph of Article 74 (2) of the Act of Accession shall be the marketing years 1977/78, 1978/79 and 1979/80, to the exclusion of years or parts of years during which abnormal prices obtained. Article 3 The prices taken for the purposes of calculating the producer prices referred to in Article 75 (2) (a) of the Act of Accession shall be those recorded for a home- grown product, defined as to commercial characteris- tics, on the representative market or markets located in the production areas in which the prices are lowest, for products or varieties representing a large propor- tion of production marketed throughout or during part of the year and which correspond to quality Class I and meet specific conditions with regard to pack- aging. For each representative market, the average price calculated shall exclude price data which may be regarded as excessively high or low in terms of normal fluctuations on this market. Article 4 The ‘representative’ prices of the Greek product, referred to in Article 75 (2) (b) of the Act of Accession shall be — the prices for Class 1 products, provided that the quantities in this class represent at least 50 % of the total quantities marketed, — the prices for Class I products, supplemented, where products in this class represent less than 50 % of the total quantities, by the prices, unchanged, of Class II products for quantities enabling 50 % of total quantities marketed to be covered,