J. Bosdriesz, M. Willemsen, K. Stronks, und A. Kunst. J Epidemiol Community Health, 69 (9):
886-892(2015)First published online: April 3, 2015, http://dx.doi.org/10.1136/jech-2014-205171. (Eurobarometer).
K. Dodson. Sociological Perspectives, 59 (4):
873-891(2016)First published online: October 14, 2015, http://dx.doi.org/10.1177/0731121415608508. (ISSP).