@article{Entwisle1986,
author = {Entwisle, B. and Mason, W.M. and Hermalin, A.I.},
title= {The multilevel dependence of contraceptive use on socioeconomic development and family planning program strength},
year = {1986},
doi = {10.2307/2061616},
journal = {Demography},
volume = {23},
number = {2},
pages = {199--216},
}