@book{Villar2018,
author = {Villar, A. and Sommer, E. and Finnøy, D. and Gaia, A. and Berzelak, N. and Bottoni, G.},
title= {CROss-National Online Survey (CRONOS) panel data and documentation user guide},
year = {2018},
address = {London},
publisher = {ESS ERIC},
}