- Author: Nikolai Mitrofanovich Krylov, Nikolai Nikolaevich Bogoliubov
- Language: English
- Year: 2016
- Author: Nikolai Mitrofanovich Krylov Nikolai Nikolaevich Bogoliubov
- Language: English
- Year: 1949
- Author: Nikolai Mitrofanovich Krylov Nikolai Nikolaevich Bogoliubov
- Language: English
- Year: 1949