@article{Hertwig2002,
author = {Hertwig, R. and Davis, J.N. and Sulloway, F.J.},
title= {Parental investment: How an equity motive can produce inequality},
year = {2002},
doi = {10.1037/0033-2909.128.5.728},
journal = {Psychological Bulletin},
volume = {128},
number = {5},
pages = {728--745},
}