@article{Billiet1988,
author = {Billiet, J. and Loosveldt, G.},
title= {Improvement of the quality of responses to factual survey questions by interviewer training},
year = {1988},
doi = {10.1086/269094},
URL = {https://doi.org/10.1086/269094},
volume = {52},
number = {2},
pages = {190--211},
}