@article{Day2013,
author = {Day, M.  and Smith, M.},
title= {Cousin marriage in south-western England in the Nineteenth Century.},
year = {2013},
doi = {10.1017/S0021932012000491},
journal = {Journal of Biosocial Science},
volume = {45},
number = {3},
pages = {405--414},
}