- Author: James A. Matisoff
- Language: English
- Year: 2020
- Author: Zia Tajeddin (editor), Atsuko Watanabe (editor)
- Language: English
- Year: 2022
- Author: Julia Lind, Bundesstiftung zur Aufarbeitung der SED-Diktatur
- Language: German
- Year: 2018
- Author: Elsbeth Bösl
- Language: German
- Year: 2017
- Author: Sonja Feldmar
- Language: German
- Year: 2019
- Author: Jörg Barke
- Language: German
- Year: 1991
- Author: Pertti Ahonen (editor)
- Language: English
- Year: 1993