- The origin of the Indo-Europeans.: East Europe as a proto-homeland of the Indo-Europeans.
- Demography.: The statistical tables. Part 1. The population of the countries of the world from most ancient times to the present days
- The Origin of the Indo-Europeans: The Archeology of the Proto-Homeland of the Indo-Europeans
- Demography: The Population of the Countries of the World from Most Ancient Times to the Present Dayr
- Economic growth around the world from ancient times to the present day: National Economy