1
by Karoly, Lynn A., Bozick, Robert, Davis, Lois M., Kitmitto, Sami
Published 2015
RAND Corporation

3
by Davis, Lois M.
Published 2008
RAND Corp.

4
by Davis, Lois M.
Published 2009
RAND Corp.

5
by Davis, Lois M.
Published 2010
RAND Corp.

6
by Davis, Lois M.
Published 2009
RAND Corp.

9
by Davis, Lois M.
Published 2006
RAND National Defense Research Institute