- Author: Spears Richard A
- Language: English
- Year: 2000
- Author: Spears Richard A
- Language: English
- Year: 2006
- Author: Wilkinson Peter Richard
- Language: English
- Year: 2006
- Author: Spears Richard A
- Language: English
- Year: 2000
- Author: Новиков А. Б.
- Language: Русский
- Year: 2004