Goltz, Thomas (2003). Chechnya Diary: A War Correspondent's Story of Surviving the War in Chechnya. New York: Thomas Dunne Books, გვ. 22. ISBN978-0-312-26874-9. „I called a well-informed diplomat pal and arranged to meet him at a bar favored by the pan-Turkic crowd known as the Gray Wolves, who were said to be actively supporting the Chechens with men and arms. ...the Azerbaijani Gray Wolf leader, Iskander, Hamidov...“
Sarah Reinke: Schleichender Völkermord in Tschetschenien. Verschwindenlassen – ethnische Verfolgung in Russland – Scheitern der internationalen Politik. Gesellschaft für bedrohte Völker, 2005, page 8 (PDFდაარქივებული 12 August 2014 საიტზე Wayback Machine. )
Sarah Reinke: Schleichender Völkermord in Tschetschenien. Verschwindenlassen – ethnische Verfolgung in Russland – Scheitern der internationalen Politik. Gesellschaft für bedrohte Völker, 2005, page 8 (PDFდაარქივებული 12 August 2014 საიტზე Wayback Machine. )
Cooley, John K. (2002) Unholy Wars: Afghanistan, America and International Terrorism, 3rd, London: Pluto Press, გვ. 195. ISBN978-0-7453-1917-9. „A Turkish Fascist youth group, the "Grey Wolves," was recruited to fight with the Chechens.“
