Case C-248/16: Judgment of the Court (Fifth Chamber) of 7 September 2017 (request for a preliminary ruling from the Oberster Gerichtshof — Austria) — Austria Asphalt GmbH & Co OG v Bundeskartellanwalt (Reference for a preliminary ruling — Competition — Concentrations between undertakings — Regulation (EC) No 139/2004 — Article 3(1)(b) and (4) — Scope — Definition of ‘concentration’ — Change in the form of control of an existing undertaking which, previously exclusive, becomes joint — Creation of a joint venture performing on a lasting basis all the functions of an autonomous economic entity)