European Commission. (1996). Regulation (EEC) no 1191/69 of the Council of 26 June 1969 on action by member states concerning the obligations inherent in the concept of a public service in transport by rail, road and inland waterway. Λουξεμβούργο: Υπηρεσία Επισήμων Εκδόσεων των ΕυρωπαΪκών κοινοτήτων.

European Commission. Regulation (EEC) No 1191/69 of the Council of 26 June 1969 On Action By Member States Concerning the Obligations Inherent in the Concept of a Public Service in Transport By Rail, Road and Inland Waterway. Λουξεμβούργο: Υπηρεσία Επισήμων Εκδόσεων των ΕυρωπαΪκών κοινοτήτων, 1996.

European Commission. Regulation (EEC) No 1191/69 of the Council of 26 June 1969 On Action By Member States Concerning the Obligations Inherent in the Concept of a Public Service in Transport By Rail, Road and Inland Waterway. Λουξεμβούργο: Υπηρεσία Επισήμων Εκδόσεων των ΕυρωπαΪκών κοινοτήτων, 1996.