- Author: Oberguggenberger Michael, Ostermann Alexander
- Language: English
- Year: 2011
- Author: Michael Oberguggenberger Alexander Ostermann (auth.)
- Language: German
- Year: 2009
- Author: Michael Oberguggenberger, Alexander Ostermann
- Language: English
- Year: 2018
- Author: Michael Oberguggenberger & Alexander Ostermann
- Language: English
- Author: Michael Oberguggenberger, Alexander Ostermann
- Language: English
- Year: 2011
- Author: Oberguggenberger Michael, Ostermann Alexander
- Language: English
- Year: 2018
- Author: Michael Oberguggenberger Alexander Ostermann
- Language: English
- Year: 2018
- Author: M. Oberguggenberger
- Language: English
- Year: 1992