Article 3

At the Commission's request, the Member States shall transmit the method they use to calculate the average price referred to in the first paragraph of Article 2.

Where prices given for the types and/or varieties of products concerned are for sizes and/or presentations other than those specified in the Annex, the Member States may calculate the average price for the sizes and/or presentations in the Annex using conversion coefficients. Fixing the conversion coefficients shall be included in the method referred to in the first subparagraph of this paragraph.

If necessary, the Commission shall draw up common guidelines on the method referred to in paragraph 1.