1. YbILC (1966–II), 177
2. Obligations Arising for States Without or Against Their Will;Tomuschat;Hague Recueil,1993
3. La pratique subséquente des États parties à un traité
4. Fisheries Jurisdiction Case: United Kingdom v. Iceland (Merits) (1974) ICJ Rep. 3, at pp. 22–24