Weaver, John (24. 11. 2006). „Mafia Hit On The Media”. Atlantic Free Press. Архивирано из оригинала 16. 10. 2007. г. Приступљено 26. 11. 2006.CS1 одржавање: Формат датума (веза)
Russia and Islam are not Separate: Why Russia backs Al-QaedaАрхивирано 19 децембар 2007 на сајту Wayback Machine, by Konstantin Preobrazhensky. According to Preobrazhenskiy, "At that time, Litvinenko was the Head of the Subdivision for Internationally Wanted Terrorists of the First Department of the Operative-Inquiry Directorate of the FSB Anti-Terrorist Department. He was ordered to undertake the delicate mission of securing Al-Zawahiri from unintentional disclosure by the Russian police. Though Al-Zawahiri had been brought to Russia by the FSB using a false passport, it was still possible for the police to learn about his arrival and report to Moscow for verification. Such a process could disclose Al-Zawahiri as an FSB collaborator. In order to prevent this, Litvinenko visited a group of the highly placed police officers to notify them in advance."
Byard, RW; Klitte, A; Gilbert, JD; James, RA (март 2002). „Clinicopathologic features of fatal self-inflicted incised and stab wounds: a 20-year study.”. The American Journal of Forensic Medicine and Pathology. 23 (1): 15—8. PMID11953487. doi:10.1097/00000433-200203000-00003.CS1 одржавање: Формат датума (веза)
Byard, RW; Klitte, A; Gilbert, JD; James, RA (март 2002). „Clinicopathologic features of fatal self-inflicted incised and stab wounds: a 20-year study.”. The American Journal of Forensic Medicine and Pathology. 23 (1): 15—8. PMID11953487. doi:10.1097/00000433-200203000-00003.CS1 одржавање: Формат датума (веза)
Mercer, Martha (21. 3. 2008). „Nekrasov's Chemical Romance”. The New York Sun. Архивирано из оригинала 27. 02. 2021. г. Приступљено 27. 05. 2023.CS1 одржавање: Формат датума (веза)
Russia and Islam are not Separate: Why Russia backs Al-QaedaАрхивирано 19 децембар 2007 на сајту Wayback Machine, by Konstantin Preobrazhensky. According to Preobrazhenskiy, "At that time, Litvinenko was the Head of the Subdivision for Internationally Wanted Terrorists of the First Department of the Operative-Inquiry Directorate of the FSB Anti-Terrorist Department. He was ordered to undertake the delicate mission of securing Al-Zawahiri from unintentional disclosure by the Russian police. Though Al-Zawahiri had been brought to Russia by the FSB using a false passport, it was still possible for the police to learn about his arrival and report to Moscow for verification. Such a process could disclose Al-Zawahiri as an FSB collaborator. In order to prevent this, Litvinenko visited a group of the highly placed police officers to notify them in advance."
Weaver, John (24. 11. 2006). „Mafia Hit On The Media”. Atlantic Free Press. Архивирано из оригинала 16. 10. 2007. г. Приступљено 26. 11. 2006.CS1 одржавање: Формат датума (веза)
Mercer, Martha (21. 3. 2008). „Nekrasov's Chemical Romance”. The New York Sun. Архивирано из оригинала 27. 02. 2021. г. Приступљено 27. 05. 2023.CS1 одржавање: Формат датума (веза)