@article{Kumm1994,
author = {Kumm, J. and Laland, K. N. and Feldman, M. W.},
title= {Gene-Culture Co-evolution and Sex-Ratios: The Effects of Infanticide, Sex-Selective Abortion, Sex Selection, and Sex-Biased Parental Investment on the Evolution of Sex Ratios},
year = {1994},
journal = {Theoretical Population Biology},
volume = {46},
number = {3},
pages = {249--278},
}