- Author: Martin Melecky
- Language: English
- Year: 2021
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- Language: English
- Year: 2014
- Author: Sylvia Horton, Sylvia Horton
- Language: English
- Year: 2006
- Author: Ian Lienert
- Language: English
- Year: 2009
- Author: Richard Tambulasi
- Language: English
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- Author: Hong Sheng, Nong Zhao
- Language: English
- Year: 2012
- Author: Rand Corporation, Ohlandt Chad J. R
- Language: English
- Year: 2017
- Author: Marglin Stephen A
- Language: English
- Year: 2015
- Author: Hurst William
- Language: English
- Year: 2009