@article{Keeter2006,
author = {Keeter, S. and Kennedy, C. and Dimock, M. and Best, J. and Craighill, P.},
title= {Gauging the impact of growing nonresponse on estimates from a national RDD telephone survey},
year = {2006},
doi = {10.1093/poq/nfl035},
journal = {Public Opinion Quarterly },
volume = {70},
number = {5},
pages = {759−779},
}