On optimality of imputation methods for estimation of population mean using higher order moment of an auxiliary variable. - Shashi Bhushan; Abhay Pratap Pandey; Arvind Pandey (Commun. Stat. Simul. Comput., 2020)

Optimal imputation of the missing data using multi auxiliary information. - Shashi Bhushan; Abhay Pratap Pandey (Comput. Stat., 2021)

Estimation of population mean in presence of missing data under simple random sampling. - Shashi Bhushan; Anoop Kumar; Abhay Pratap Pandey; Saurabh Singh (Commun. Stat. Simul. Comput., 2023)