@article{Casterline2000,
author = {Casterline, J.B. and Sinding, S.W.},
title= {Unmet need for family planning in developing countries and implications for population policy},
year = {2000},
doi = {10.1111/j.1728-4457.2000.00691.x},
journal = {Population and Development Review},
volume = {26},
number = {4},
pages = {691--723},
}