Klimiuk, Zbigniew. “The Structure and Trade Turnover of Germany-USSR in the 1970s As a Symptom of the Progressive Slowdown and Economic Crisis of the Soviet Union”. Historia i Polityka, no. 39 (46) (April 20, 2022): 59–79. Accessed July 18, 2024. https://apcz.umk.pl/HiP/article/view/40555.