- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)22
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)3
- Kahn, Albert Eugene2
- Bols, Peter1
- Davies, Joseph Edward1
- Gati, Charles1
- Kolko, Gabriel1
- Konrád, György1
- Molnár, Erik1
- Pacepa, Ion Mihai1
- Seldes, George1
- Sík, Endre1
- United States. Department of State1
- Zentay, Tibor1