- Author: Michael Ross Christopher Ross
- Language: English
- Year: 2019
- Author: Ross Christopher
- Language: German
- Year: 2015
- Author: Ross Christopher
- Language: German
- Year: 2016
- Author: Ross Christopher
- Language: German
- Year: 2015
- Author: Ross Christopher
- Language: German
- Year: 2015
- Author: Ross Christopher
- Language: German
- Year: 2012
- Author: Ross Christopher
- Language: German
- Year: 2014
- Author: Ross Christopher
- Language: German
- Year: 2013
- Author: Energia (Aspectos EconÔmicos), Ross Christopher E. H., Sloan Lane E
- Language: English
- Year: 2007