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- Kużniar-Plota, Małgorzata (2004-11-30). "Decision to commence investigation into Katyn Massacre". Warsaw: Departmental Commission for the Prosecution of Crimes against the Polish Nation. 喺2010-04-10搵到.
- "Russian parliament admits Stalin ordered Katyn massacre". RFI. RFI. 26 November 2010. 喺26 November 2010搵到.