Council of Europe, Parliamentary Assembly Documents 1999 Ordinary Session (fourth part, September 1999), Volume VII, Council of Europe, 1999, p. 18
Mag. Katharina Kirchmayer, The Case of the Isolation Regime of Abdullah Öcalan: A Violation of European Human Rights Law and Standards?, GRIN Verlag, 2010, p. 37
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Marlies Casier, Joost Jongerden, Nationalisms and Politics in Turkey: Political Islam, Kemalism and the Kurdish Issue, Taylor & Francis, 2010, p. 146.