- Author: Bhatnagar Nirdosh
- Language: English
- Year: 2019
- Author: Gunter Dueck (auth.)
- Language: German
- Year: 2008
- Author: Bhatnagar Nirdosh
- Language: English
- Year: 2018
- Author: Professor Dr. Gunter Dueck (auth.)
- Language: German
- Year: 2004
- Author: Professor Dr. Gunter Dueck (auth.)
- Language: German
- Year: 2004