Memoirs lack the weight of official documents, Petrov noted, but Serov also described reading a Wallenberg file.
彼得罗夫指出，回忆录缺乏官方文件的份量，但谢罗夫也描述了他读到的一份有关瓦伦堡的文件。
2
The media office of the FSB did not immediately respond to questions about whether it would release the documents Serov mentioned or cooperate with renewed research.