TY  - ELEC
A1  - Beullens, K.
A1  - Loosveldt, G.
A1  - Denies, K.
A1  - Vandenplas, C.
T1  - Quality matrix for the European Social Survey, round 7
Y1  - 2016
UR  - http://www.europeansocialsurvey.org/methodology/

ER  -