- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)225
- Héderváry, Claire de5
- Alexeev, Vasilii Ivanovich1
- Berdiaev, Nikolai1
- Besier, Gerhard1
- Bourdeaux, Michael1
- Curtiss, John Shelton1
- Ericksen, Robert P1
- Fledelius, Hanne1
- Halperin, Samuel William1
- Hill, Kent Richmond1
- Knox, Zoe Katrina1
- Library of Congress. Law Library1
- Mid-European Law Project1
- Monticone, Ronald C.1
- Naím, Moisés1
- Open Society Archives at Central European University1
- Organization for Security and Co-operation in Europe. Office for Democratic Institutions and Human Rights1
- Simon, Gerhard1
- Struve, N. A.1