@article{Kemkes-Grottenthalef2005,
author = {Kemkes-Grottenthalef, A.},
title= {Of Grandmothers, Grandfathers and Wicked Step-Grandparents. Differential Impact of Paternal Grandparents on Grandoffspring Survival},
year = {2005},
journal = {Historical Social Research},
volume = {30},
number = {3},
pages = {219--239},
}