@article{Gibson2007,
author = {Gibson, M.A.  and Mace, R. },
title= {Polygyny, reproductive success and child health in rural Ethiopia: Why marry a married man?},
year = {2007},
doi = {10.1017/S0021932006001441},
journal = {Journal of Biosocial Science },
volume = {39},
number = {2},
pages = {287--300},
}