- Author: United Nations Library, Walter De Gruyter Incorporated
- Language: English
- Year: 1983
- Author: Walter de Gruyter und Co., Lemeševskij Sergej Vladimirovič, Matus Petr Pavlovič, Polâkov Dmitrij Borisovič
- Language: English
- Year: 2016
- Author: Walter de Gruyter GmbH & Co. KG, Maurya R. C., Mir J.M
- Language: English
- Year: 2019
- Author: Walter de Gruyter GmbH & Co. KG, Gomes-Gonçalves Erika, Gzyl Henryk, Mayoral Silvia
- Language: English
- Year: 2018
- Author: Walter de Gruyter und Co., Schlücker Barbara
- Language: English
- Year: 2014
- Author: Walter de Gruyter, Co., Yi Christina
- Language: English
- Year: 2018