@article{Randall2004,
author = {Randall, S.C. and Koppenhaver, T.},
title= {Qualitative data in Demography: the sound of silence and other problems},
year = {2004},
doi = {10.4054/DemRes.2004.11.3},
journal = {Demographic Research},
volume = {11},
number = {3},
pages = {57--96},
}