@article{Barret2002,
author = {Barret, G. and Wellings, K.},
title= {What is a ‘planned’ pregnancy? Empirical data from a British study},
year = {2002},
doi = {10.1016/S0277-9536(01)00187-3},
journal = {Social Science & Medicine},
volume = {55},
number = {4},
pages = {545--557},
}