- Author: Evgenii Sedov, Евгений Седов, E. Felegenhauer, Jevgeņijs Sedovs, Juris Birzvalks
- Language: English
- Year: 1984
- Author: Evgenii Sedov, Евгений Седов, E. Felegenhauer, Jevgeņijs Sedovs, Juris Birzvalks
- Language: English
- Year: 1973
- Author: Евгений Седов
- Language: Русский
- Year: 1966