- Author: Hyne Norman J
- Language: English
- Year: 2012
- Author: Hessler Peter G
- Language: English
- Year: 2015
- Author: Dahl Carol Ann
- Language: English
- Year: 2015
- Author: Dahl Carol Ann
- Language: English
- Year: 2015
- Author: Peter G. Hessler
- Language: English
- Year: 2015
- Author: Seger Karl A
- Language: English
- Year: 2005
- Author: William P. Sanders
- Language: English
- Year: 1996
- Author: Woolf Fiona
- Language: English
- Year: 2003