KUMAR, Sanjay.
 A Robust Regression Type Estimator for Estimating Population Mean under Non-Normality in the Presence of Non-Response.
<strong>Global Journal of Science Frontier Research</strong>, [S.l.], sep. 2015.
ISSN 2249-4626.
Available at: &lt;<a href="https://journalofscience.org/index.php/GJSFR/article/view/1649" target="_new">https://journalofscience.org/index.php/GJSFR/article/view/1649</a>&gt;. Date accessed: 18 may 2022.