1
2
Argitaratua: 2011.
3
4
5
Argitaratua: 2013
Free to read (incl. Open Access)
6
Argitaratua: 2011.
7
Argitaratua: 2008.
Superior document: Rand Corporation monograph series
8
Argitaratua: 2008.
Superior document: Rand Corporation monograph series
Links: Testu osoa
9
Argitaratua: 2010.
Superior document: Rand Corporation monograph series
10
Argitaratua: 2010.
Superior document: Rand Corporation monograph series
Links: Testu osoa