1
by Paul, Christopher, Clarke, Colin P., Grill, Beth, Dunigan, Molly
Published 2013
RAND Corporation

2

3
by Paul, Christopher
Published 2010
RAND

4
by Paul, Christopher, Clarke, Colin P., Grill, Beth, Dunigan, Molly
Published 2013
RAND Corporation

6
by Paul, Christopher
Published 2010
RAND National Defense Research Institute