@article{Brick2013,
author = {Brick, J.M. and Williams, D. },
title= {Explaining rising nonresponse rates in cross-sectional surveys},
year = {2013},
doi = {10.1177/0002716212456834},
journal = {The Annals of the American Academy of Political and Social Science },
volume = {645},
pages = {36--59},
}