- Radio Free Europe/Radio Liberty, Inc - Research Institute21
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- Csákó, Mihály14
- Soviet Red Archives10
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- Visnews8
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- Pallai, Péter4
- Ajtony, Árpád3
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- Hungarian Ministry of the Interior3
- Radio Free Europe and Radio Liberty, Inc.3
- Varga, László3
- Balogh, Eva S.2
- Bíró, András2
- Cséry, László2
- Geréb, Anna2