TY  - JOUR
A1  - Matthews, S.
A1  - Sun, R.
T1  - Incidence of four-generation family lineages: Is timing of fertility or mortality a better explanation?
Y1  - 2006
DO  - 10.1093/geronb/61.2.S99
JF  - The Journals of Gerontology: Social Sciences
VL  - 61B
IS  - 2
SP  - S99
EP  - -S106

ER  -