Bloomington: Indiana University Press 1987. ↑ StA Dusseldorf, AZ:8 Js 10904/59 <AZ. ZSL: 208 AR-Z 230/59, vol. 10, pp. 2056R, 2057 ↑ Operation Reinhard: The Extermination Camps of Belzec, Sobibor and Treblinka - The Attempt to Remove Traces, nizkor.org; accessed 26 April 2016.