Penyelesaian sengketa perbankan syariah pasca Putusan Mahkamah Konstitusi Nomor 9/PUU-X/2012 mengenai pembatalan penjelasan Pasal 55 ayat 2 Undang-Undang Nomor 21 tahun 2008 tentang perbankan syariah : studi kasus Tuan Dadang Achmad = Islamic law banking dispute settlement after the Constitutional Court Decision regarding Cancellation Number 93/PUU-X/2012 explanation of Article 55 Paragraph 2 of Law Number 21 year 2008 on islamic banking : case study Mr. Dadang Achmad