1
by Willis, Henry H.
Published 2005
RAND

2
by Willis, Henry H.
Published 2010
Rand

4
by Willis, Henry H.
Published 2014
RAND

5
by Willis, Henry H.
Published 2016
RAND

6
by Samaras, Constantine, Willis, Henry H.
Published 2013
RAND

9
by Weatherford, Brian A.
Published 2008
RAND Corp.
Other Authors: '; ...Willis, Henry H....

10
by Jackson, Brian A.
Published 2010
RAND
Other Authors: '; ...Willis, Henry H....