- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)6
- Dörries, Bernhard2
- Nóvé, Béla2
- Open Society Archives at Central European University2
- Schamoni, Peter2
- Vajda, Júlia2
- Borresholm, Boris von1
- Bortstieber, Gertrud1
- Böhnisch, Ulrike1
- Communist International (Comintern)1
- Doermer, Christian1
- Hansjürgen, Pohland1
- Hanák, Péter1
- Hegedüs, András1
- Houwer, Rob1
- International Helsinki Federation for Human Rights1
- Khittl, Ferdinand1
- Koch, Pitt1
- Krüttner, Walter1
- Magos-Gimes, Judit1