Article 55 of the American Convention on Human Rights, Argentina, Advisory opinion, Advisory Opinion OC-20/09, IACHR Series A No 20, IHRL 4138 (IACHR 2009), 29th September 2009, Inter-American Court of Human Rights [IACtHR]

Whether, in accordance with Article 55(3) of the American Convention on Human Rights (‘ACHR’), the appointment of an ad hoc judge should be limited to those cases in which the application submitted to the Inter-American Court of Human Rights arose from an inter-state petition.

Whether, under Article 55(1) of the ACHR, a permanent judge who was a national of the respondent state had the right to participate in a case arising from an individual petition.