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2
Foilsithe: 2011.
3
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5
Foilsithe: 2013
Free to read (incl. Open Access)
6
Foilsithe: 2011.
7
Foilsithe: 2008.
Superior document: Rand Corporation monograph series
8
Foilsithe: 2008.
Superior document: Rand Corporation monograph series
Links: Faigh an téacs iomlán
9
Foilsithe: 2010.
Superior document: Rand Corporation monograph series
10
Foilsithe: 2010.
Superior document: Rand Corporation monograph series
Links: Faigh an téacs iomlán