- Author: Ozay Mehmet
- Language: English
- Year: 2011
- Author: Dean Forbes
- Language: English
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- Author: Richard Jolly, Louis Emmerij, Thomas G. Weiss
- Language: English
- Year: 2009
- Author: Kamiljon T. Akramov
- Language: English
- Year: 2012
- Author: Council of Europe, Piotr A. Switalski
- Language: English
- Year: 2013
- Author: Michael M. Cernea, Chris McDowell
- Language: English
- Year: 1999
- Author: Akampurira Abraham
- Language: English
- Year: 2013
- Author: Weiguo Zhang
- Language: English
- Year: 2002
- Author: Jinjun Xue
- Language: English
- Year: 2012