PART IV COMPETITION AND OTHER COMMON RULES

CHAPTER 1 RULES APPLICABLE TO UNDERTAKINGS
Article 57 1. Concentrations the control of which is provided for in paragraph 2 and which create or strengthen a dominant position as a result of which effective competition would be significantly impeded within the territory covered by this Agreement or a substantial part of it, shall be declared incompatible with this Agreement.
2. The control of concentrations falling under paragraph 1 shall be carried out by:
(a) the EC Commission in cases falling under Regulation (EEC) No 4064/89 in accordance with that Regulation and in accordance with Protocols 21 and 24 and Annex XIV to this Agreement. The EC Commission shall, subject to the review of the EC Court of Justice, have sole competence to take decisions on these cases;
(b) the EFTA Surveillance Authority in cases not falling under subparagraph (a) where the relevant thresholds set out in Annex XIV are fulfilled in the territory of the EFTA States in accordance with Protocols 21 and 24 and Annex XIV. This is without prejudice to the competence of EC Member States.