c) Paragraph 1 of article 50; d) Paragraph 1 and 3 of article 51; e) Article 52; and f) Article 53. 2. Regulatory fees payable under article 13 shall not be payable before 1 January 2013. 3. Regulatory fees payable in 2013 shall be on the basis of gross revenues obtained by service providers in 2012. Article 88 Entry into force The present Decree-Law shall enter into force on the day following the date of publication thereof in the Official Gazette. Approved by the Council of Ministers on the 14 March, 2012. The Prime Minister, _____________________ Kay Rala Xanana Gusmão The Minister of Infrastructure, ________________________ Pedro Lay Promulgated on 26 / 03 / 2012 For publication. The President of the Republic, _____________________ José Ramos-Horta