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- "Revolutionary Russia" (ed. by R. Pipes) Harvard University Press. 1968
- Jill Lisk "The struggle for supremacy in the Baltic 1600-1725" Funk & Wagnalis. 1967
- S. Swianiewicz "Forced labor and economic development. An enquiry into the experience of Soviet industrialization" Oxford University Press. 1965
- Robert Conquest "Reflections on a ravaged century" W.W.Norton & Company. 2000