TY  - JOUR
A1  - Coall, D.A.
A1  - Hertwig, R.
T1  - Grandparental investment: A relic of the past or a resource for the future?
Y1  - 2011
DO  - 10.1177/0963721411403269
JF  - Current Directions in Psychological Science 
VL  - 20
IS  - 2

ER  -