European Commission. (1996). Council regulation (EEC) no. 3976/87 of 14 December 1987 on the application of article 85 (3) of the treaty to certain categories of agreements and concerted practices in the air transport sector: 9 languages. Luxembourg: Office fo Official Publications of the European Communities.

European Commission. Council Regulation (EEC) No. 3976/87 of 14 December 1987 On the Application of Article 85 (3) of the Treaty to Certain Categories of Agreements and Concerted Practices in the Air Transport Sector: 9 Languages. Luxembourg: Office fo Official Publications of the European Communities, 1996.

European Commission. Council Regulation (EEC) No. 3976/87 of 14 December 1987 On the Application of Article 85 (3) of the Treaty to Certain Categories of Agreements and Concerted Practices in the Air Transport Sector: 9 Languages. Luxembourg: Office fo Official Publications of the European Communities, 1996.