@article{Wright1988,
author = {Wright, R.E. and Ermisch, J.F. and Hinde, P.R. and Joshi, H.E.},
title= {The third birth in Great Britain},
year = {1988},
doi = {10.1017/S0021932000017612},
volume = {20},
number = {4},
pages = {489--496},
}