- Author: Alan V. Oppenheim, Ronald W. Schafer
- Language: German
- Year: 1998
- Author: Alan V. Oppenheim, Ronald W. Schafer
- Language: English
- Year: 2010
- Author: Alan V. Oppenheim, Ronald W. Schafer
- Language: English
- Year: 2010
- Author: Alan V Oppenheim, Ronald W Schafer
- Language: English
- Year: 2014
- Author: Alan V. Oppenheim Ronald W. Schafer
- Language: English
- Year: 1975
- Author: Alan V. Oppenheim, Ronald W. Schafer
- Language: Spanish
- Year: 2011
- Author: Alan V. Oppenheim, Ronald W. Schafer
- Language: English
- Year: 2010
- Author: Alan V. Oppenheim Ronald W. Schafer
- Language: English
- Year: 1996
- Author: Alan V. Oppenheim Ronald W. Schafer
- Language: Polish
- Year: 1979
- Author: Alan V. Oppenheim Ronald W. Schafer
- Language: English
- Year: 2014