@article{Hagen2006,
author = {Hagen, E.H. and Barrett, H.C. and Price, M.E.},
title= {Do human parents face a quantity‐quality tradeoff? Evidence from a Shuar community},
year = {2006},
doi = {10.1002/ajpa.20272},
volume = {130},
number = {3},
pages = {405--418},
}