Matera, C. 2015. CJEU - Judgment of 23.9.2013 (Grand Chamber) – Case C-221/11 Leyla Demirkan v Bundesrepublik Deutschland – «Association Agreement with Turkey – Article 41 of the Additional Protocol - Freedom to provide services – Visa requirement». Turkey Association Agr. Revista de Derecho Comunitario Europeo. 47 (Sep. 2015), 285–299.