21
Published: c2005.
22
Published: 2011.
23
24
Published: 2015
25
Published: 2013
26
Published: 2012
Superior document: Technical report (Rand Corporation)
27
Published: 2010.
Superior document: Rand Corporation monograph series
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28
Published: 2006.
Links: Get full text
29
Published: 2013.
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30
Published: 2007.
31
Published: 2015
32
Published: 2013
33
Published: 2007.
34
Published: 2014
35
Published: 2013.
36
Published: 2007
37
Published: 2013
38
Published: 2012
Superior document: Rand Corporation monograph series
39
Published: 2002.
40
Published: c2012.