"Arvo Pärt commemorates Politkovskaja"(PDF). Universal Edition Newsletter (Winter 2006/2007). Universal Edition: 13. 2007. Archived(PDF) from the original on 17 July 2011. Retrieved 19 February 2011.
"Arvo Pärt commemorates Politkovskaja"(PDF). Universal Edition Newsletter (Winter 2006/2007). Universal Edition: 13. 2007. Archived(PDF) from the original on 17 July 2011. Retrieved 19 February 2011.