&quot; Accordi internazionali &quot; (Accords internationaux) dans Encyclopédie juridique Treccani — Rome, 1989. &quot; Adesione &quot; (Adhésion), ibidem.
&quot; Accordi internazionali &quot; (International agreements) and &quot; Adesione &quot; (Accession), in Enciclopedia Giuridica Treccani, Rome, 1989.