Naumov, S. O., and D. V. Lanko. “On the Question of Viacheslav Zaikin As a ‘Provocateur’”. The Journal of V. N. Karazin Kharkiv National University. Series: History, no. 58, Dec. 2020, pp. 39-56, doi:10.26565/2220-7929-2020-58-03.