Galesic. M. & Bosnjak. M. (2009). Effects of questionnaire length on participation and indicators of 8. response quality in a web survey. Public opinion quarterly. 73(2). 349-360.
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M., G., M, B. (2009). Effects of questionnaire length on participation and indicators of 8. response quality in a web survey. Public opinion quarterly, 73(2), pp. 349-360.
(xsd:string)