TITLE II COOPERATION WITH THE INTERNATIONAL CRIMINAL COURT
CHAPTER VI ENFORCEMENT OF SENTENCES PRONOUNCED BY THE COURT
Article 37
Should a convicted person enter an appeal against an acquittal or conviction or against sentence in accordance with article 81 of the Statute, an application for revision of a conviction or sentence in accordance with article 84 of the Statute or an application for a reduction of sentence in accordance with article 110 of the Statute, the request may be transmitted via the central authority which shall communicate it promptly to the Court together with all relevant documents.
Revision of conviction or sentence
Periodical review by ICC regarding reduction of sentence
EDIT.