@article{Casterline2003,
author = {Casterline, J.B. and El-Zanaty, F. and El-Zeini, L.O.},
title= {Unmet need and unintended fertility: Longitudinal evidence from Upper Egypt},
year = {2003},
doi = {10.2307/3181044},
journal = {International Family Planning Perspectives},
volume = {29},
number = {4},
pages = {158--166},
}