1
Argitaratua: 1990
Superior document: Enthalten in Issues in the economics of aging Chicago, Ill. [u.a.], 1990 S. 13 - 32
2
Argitaratua: 1990
Superior document: Enthalten in Issues in the economics of aging Chicago, Ill. [u.a.], 1990 S. 205 - 229
3
Argitaratua: 1989
4
Argitaratua: 2009
Superior document: Working paper series / National Bureau of Economic Research 14647
Links: Testu osoa
5
6
7
Argitaratua: 2005