@article{Ali2003,
author = {Ali, M.M. and Cleland, J. and Shah, I.H.},
title= {Trends in reproductive behavior among young single women in Colombia and Peru: 1985-1999},
year = {2003},
doi = {10.1353/dem.2003.0031},
journal = {Demography},
volume = {40},
number = {4},
pages = {659--673},
}