@article{Jones1988,
author = {Jones, E.F. and Forrest, J.D. and Henshaw, S.K. and Silverman, J. and Torres, A.},
title= {Unintended pregnancy, contraceptive practice and family planning services in developed countries},
year = {1988},
doi = {10.2307/2135523},
journal = {Family Planning Perspectives},
volume = {20},
number = {2},
pages = {53--67},
}