@article{Mills2014,
author = {Mills, H.L. and Johnson, S. and Hickman, M. and Jones, N.S. and Colijn, C.},
title= {Errors in reported degrees and respondent driven sampling: Implications for bias},
year = {2014},
doi = {10.1016/j.drugalcdep.2014.06.015},
journal = {Drug and Alcohol Dependence},
volume = {142},
pages = {120--126},
}