Here's one more from MathSciNet. N Ya Vilenkin, Formulas on cardboard, MR 93a:01039, reviewed by B Rosenfeld. Nikolay S Koshlyakov was arrested in 1942, was denounced as an "enemy of the nation," and was condemned to ten years in the camps. The book written by him in the camp, Investigations of a class of transcendental functions determined by the generalized equation of Riemann, was published ... in 1949 ... under the pseudonym N S Sergeev (Koshlyakov's patronymic name was Sergeevich).