@article{Bertrand1982,
author = {Bertrand, J.T. and Roberto Santiso, G. and Cisneros, R.J. and Mascarin, F. and Morris, L.},
title= {Family planning communications and contraceptive use in Guatemala, El Salvador, and Panama},
year = {1982},
doi = {10.2307/1965446},
volume = {13},
number = {6/7},
pages = {190--199},
}