Source: File photo of the OSCE 1996 Summit in Lisbon. EVSTAFIEV, Mikhail. Lisbon: Organization for Security and Co-operation in Europe, 1996. Colour.
Organization for Security and Co-operation in Europe, OSCE. [ON-LINE]. [s.l.]: [s.d.]. Disponible sur http://www.osce.org/index.php.

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