- Author: Dmitry Travin, Vladimir Gel'man, Otar Marganiya, Andreas Umland, Vladimir Ryzhkov
- Language: English
- Year: 2020
- Author: Vladimir Gel'man, Otar Marganiya, Nikolay Dobronravin, Andrey Scherbak, Dmitry Travin, Andrey Zaostrovtsev
- Language: English
- Year: 2010