Misra P, Singh RK. RATIO-PRODUCT-DIFFERENCE (RPD) TYPE DOUBLE SAMPLING ESTIMATORS FOR FINITE POPULATION VARIANCE USING AUXILIARY INFORMATION. JRSS [Internet]. 2014 Jun. 2 [cited 2024 Nov. 4];7(01):79-91. Available from: https://journals.riverpublishers.com/index.php/JRSS/article/view/21605