@article{Beach1982,
author = {Beach, L.R. and Hope, B.D. and Campbell, F.L.},
title= {The expectation-threshold model of reproductive decision making},
year = {1982},
doi = {10.1007/BF01367489},
journal = {Population and Environment},
volume = {5},
number = {2},
pages = {95--108},
}