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Viplav Kumar Singh, Rajesh Singh. A Generalised Family of Estimator for Estimating Unknown Variance Using Two Auxiliary Variables. Math. J. Interdiscip. Sci. [Internet]. 2015Mar.30 [cited 2024Apr.26];3(2):193-207. Available from: https://mjis.chitkara.edu.in/index.php/mjis/article/view/114