1. Response bias in opinion polls and American social welfare;Epstein;Soc. Sci. J.,2006
2. Determinants of social desirability bias in sensitive surveys: a literature review;Krumpal;Qual. Quantity,2013
3. Indirect content privacy surveys: measuring privacy without asking about it;Braunstein,2011
4. Pew Research Center, 2010, U.S. Religious Knowledge Survey, http://pewforum.org/other-beliefs-and-practices/u-s-religious-knowledge-survey.aspx.
5. E. Commission, European Union Labour Force Survey, web, 2013.