- Author: Christensen Peter W., Klarbring Anders
- Language: English
- Year: 2010
- Author: Elizabeth Haas Terry Christensen Peter J. Haas
- Language: English
- Year: 2015
- Author: Friedrich Müller, Ralph Christensen, Peter Naumann, Paulo Bonavides, Fábio Konder Comparato
- Language: Portuguese
- Year: 1998