@techreport{Callahan2013,
author = {Callahan, R.L. and Becker, S.},
title= {Contraceptive Intentions and Use in Rural Bangladesh},
year = {2013},
URL = {http://paa2013.princeton.edu/papers/130056
%[9 April 2014},
publisher = {Population Association of America},
number = {Resource document},
}