Quotes from Christopher Browning

the testimonies of especially Höss and to some extent Eichmann are confused, contradictory, self-serving, and not credible. -- The Origins of the Final Solution , page 544

As with any detailed eyewitness testimonies after so many years, Eichmann's various accounts differ from one another and are not free of puzzling contradictions with other evidence. -- The Origins of the Final Solution: The Evolution of Nazi Jewish Policy, September 1939-March 1942 (University of Nebraska Press and Yad Vashem, 2004), page 363.