KRAMAR, Yurii, and Anatolii SHVAB. “THE SOVIET SPECIAL SERVICES’ PROPAGANDA AND SABOTAGE ESPIONAGE ACTIVITIES IN THE TERRITORY OF WESTERN VOLYN (1919 – 1921)”. EAST EUROPEAN HISTORICAL BULLETIN, no. 16 (September 17, 2020): 163–175. Accessed November 23, 2024. http://eehb.dspu.edu.ua/article/view/210893.