@article{González Ferrer2011,
author = {González Ferrer, A. and Beauchemin, C.},
title= {Sampling international migrants with origin-based snowballing method. New evidence on biases and limitations},
year = {2011},
doi = {10.4054/DemRes.2011.25.3},
journal = {Demographic Research },
volume = {25},
number = {3},
pages = {103−134},
}