@article{Casterline1997,
author = {Casterline, J.B. and Perez, A.E. and Biddlecom, A.E.},
title= {Factors underlying unmet need for family planning in the Philippines},
year = {1997},
doi = {10.2307/2137886},
journal = {Studies in Family Planning},
volume = {28},
number = {3},
pages = {173--191},
}