1.Article 34 shall apply to costs of research and development. In exceptional cases, however, the Member States may permit derogations from Article 34 (1) (a). In that case, they may also provide for derogations from Article 34 (1) (b). Such derogations and the reasons for them must be disclosed in the notes on the accounts.
2.Article 34 (1) (a) shall apply to goodwill. The Member States may, however, permit companies to write goodwill off systematically over a limited period exceeding five years provided that this period does not exceed the useful economic life of the asset and is disclosed in the notes on the accounts together with the supporting reasons therefore.