European Commission. (1996). Commission regulation (EC) no. 3652/93 of 22 December 1993, on the application of article 85 (3) of the treaty to certain categories of agreements between undertakings relating to computerized reservation systems for air transport services: Provisional, unrevised texts : 9 languages. Luxembourg: Office for Official Publications of the European Communities.

European Commission. Commission Regulation (EC) No. 3652/93 of 22 December 1993, On the Application of Article 85 (3) of the Treaty to Certain Categories of Agreements between Undertakings Relating to Computerized Reservation Systems for Air Transport Services: Provisional, Unrevised Texts : 9 Languages. Luxembourg: Office for Official Publications of the European Communities, 1996.

European Commission. Commission Regulation (EC) No. 3652/93 of 22 December 1993, On the Application of Article 85 (3) of the Treaty to Certain Categories of Agreements between Undertakings Relating to Computerized Reservation Systems for Air Transport Services: Provisional, Unrevised Texts : 9 Languages. Luxembourg: Office for Official Publications of the European Communities, 1996.