TY  - JOUR
A1  - Matthews, S.H.
A1  - Sun, R.
T1  - Incidence of four-geneneration family lineages: Is timing of fertility or mortality a better explanation?
Y1  - 2006
JF  - The Journals of Gerontology Series B: Psychological Sciences and Social Sciences
VL  - 61
IS  - 2
SP  - S99
EP  - -S106

ER  -