Listed below are the legal opinions indicating the title, the date (some opinions are not dated) and the possible presence of other kinds of documents. The attribution to Cassese is only certain where it is clearly specified.

- "Affidavit of Antonio Cassese. Conspiracy and Joint Criminal Enterprise under the Laws of War", 29 October 2004.
"Memorandum. Conspiracy (and Joint Criminal Enterprise) under the Laws of War" by Antonio Cassese, (EN). The file comprises other supporting material referring to Cassese`s texts.
- "Affidavit on "The immunities of Foreign State Officials Suspected of International Crimes", by Antonio Cassese, 12 June 2008.
- "How international tribunals should incidentally apply national criminal law. Expert Opinion", by Antonio Cassese, 9 September 2008.
- "Expert opinion on the illegality of the EU Council Decision 2008/583/EC Concerning PMOI", and "Expert Opinion on the legal nature of Council decision 2008/583/EC", by A. Cassese, 3 January 2009.
- "Expert opinion on the inconsistency with the European human rights convention of the French judicial investigations into alleged terrorist activities of alleged members of PMOI", by Antonio Cassese, 24 February 2009.
- "Supplementary expert opinion on the incidental application of Philippine criminal law by international tribunals".
- "Expert Opinion on whether Israel’s targeted killings of Palestinian Terrorists is consonant with International Humanitarian Law" (with the draft text).
- "Legal issues relating to Dual Nationality". A research opinion by Antonio Cassese, Professor of International Law, University of Florence, (English) and Other legal issues relating to dual nationality. A research opinion by Antonio Cassese.
- The last file contains two unidentified texts: "Proposal for contributing to peace in Iraq through the establishment of an International Criminal Tribunal" and another untitled text, starting with "It is possible to avert a war in Iraq (…)"

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