1
by Button, Robert
Published 2008
RAND National Defense Research Institute

2
by Davis, Paul K.
Published 2008
Rand Corp.

3

4
by Schank, John F.
Published 2011
Rand Corporation

5
by Schank, John F.
Published 2011
RAND

7
by Martin, Brad
Published 2013
RAND Corporation

8

9

10
by Davis, Lynn E.
Published 2014
RAND