An excellent article about Serov’s Memoir on the historian and scientist’s Vadim Birstein’s website:
I have … some doubts in the authenticity of this document [Ivan Serov’s memoir]. It could have been created later, and could have had no relationship to Serov. It is hard to say.
— Boris Sokolov, Russian historian, interview on July 14, 2016
The word “killed” has never appeared in any official documents [about Raoul Wallenberg] released from the Soviet side, according to Nikita Petrov, a historian with the Memorial organization in Moscow who specializes in the Stalinist era and Serov himself.
The book [Serov’s memoir] is full of distortions and omissions of important facts.
— Gurdrun Persson, Associate Professor, Department of Slavic Languages, Stockholm University, from En bra rysk story – om vi bara kunde lita på den