@article{Pashos2008,
author = {Pashos, A. and McBurney, D.H.},
title= {Kin relationships and the caregiving biases of grandparents, aunts, and uncles},
year = {2008},
doi = {10.1007/s12110-008-9046-0},
journal = {Human Nature},
volume = {19},
number = {3},
pages = {311--330},
}