- Author: Martin S. Staum
- Language: English
- Year: 2003
- Author: Martin S. Staum
- Language: English
- Year: 2011
- Author: Martin S. Staum
- Language: English
- Year: 1996
- Author: Martin S. Staum
- Language: English
- Year: 2014
- Author: Martin S. Staum
- Language: English
- Year: 2011
- Author: Martin S. Staum
- Language: English
- Year: 1996
- Author: Martin S. Staum
- Language: English
- Year: 2003
- Author: Martin S. Staum
- Language: English
- Year: 2003
- Author: Martin S. Staum
- Language: English
- Year: 1980