@article{Lehdonvirta2021,
author = {Lehdonvirta, V. and Oksanen, A. and Räsänen, P. and Blank, G.},
title= {Social media, web, and panel surveys: Using non‐probability samples in social and policy research},
year = {2021},
doi = {10.1002/poi3.238},
volume = {13},
number = {1},
pages = {134--155},
}