- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)18
- Hanák, Péter2
- Vajda, Júlia2
- Bak, Gamma1
- Bulgarian Unit1
- Csákó, Mihály1
- Czechoslovak Unit1
- David Rohde1
- Der Spiegel1
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- Einsele, Lukas1
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- Lanzmann, Claude1
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- Open Society Archives at Central European University1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- Radio Free Europe and Radio Liberty, Inc.1
- Radio Sarajevo1