- Author: Piotr Steinkeller
- Language: English
- Year: 2017
- Author: Piotr Steinkeller
- Language: English
- Year: 1992
- Author: Piotr Steinkeller Michael Hudson
- Language: English
- Year: 2015
- Author: Piotr Steinkeller
- Language: English
- Year: 2017
- Author: Piotr Steinkeller
- Language: English
- Year: 1989