- Seton-Watson, Hugh3
- Miliukov, P. N.2
- Arutiunian, IUrii Vartanovich1
- Berdiaev, Nikolai1
- Browder, Robert Paul1
- Burdzhalov, E. N.1
- Engel, Barbara Alpern1
- Florinsky, Michael T.1
- Freeborn, Richard1
- Grant, Steven A.1
- Hingley, Ronald1
- Hunczak, Taras1
- Kalmykov, Andrei Dmitrievich1
- Kariakin, IU1
- Katkov, George1
- Kliuchevskii, V. O.1
- Makovskii, Sergei Konstantinovich1
- Massie, Robert K.1
- Mihajlov, Mihajlo1
- Nolʹde, B. E.1