- Author: Hagen Kleinert
- Language: English
- Year: 2016
- Author: Niemann H.
- Language: German
- Year: 2007
- Author: Aho A.V. Ullman J.D.
- Language: English
- Year: 2013
- Author: Roemer H. Forger M.
- Language: German
- Year: 1993
- Author: Coutinho S C
- Language: Portuguese(Portugal)
- Year: 2006
- Author: Coutinho S C
- Language: Portuguese(Portugal)
- Year: 2009
- Author: Coutinho S C
- Language: Italian
- Year: 2007
- Author: Schremmer A.
- Language: English
- Year: 2008