Optimum stratification for scrambled response with ratio and regression methods of estimation. - Pawan Kumar Mahajan (Model. Assist. Stat. Appl., 2006)

Minimum variance stratification for scrambled response. - Med Ram Verma; Pawan Kumar Mahajan; S. P. Dhall (Model. Assist. Stat. Appl., 2006)

Optimum stratification for allocation proportional to strata totals for scrambled response. - Pawan Kumar Mahajan; P. Sharma; R. K. Gupta (Model. Assist. Stat. Appl., 2007)