Chaudhuri, ArijitChristofides, T C2011-08-042011-08-042007Journal of statistical planning and inference,V137,P589-593http://hdl.handle.net/10263/2266enIndirecting questioningProtecting privacyRandomized responseSophisticated estimationUnequal probability samplingItem count techniques in estimating the proportion of people with a sensitive featureArticle