A.A, E.-S. and H. A, E.-K. (2020) “Calibration Estimation for Ratio Estimators in Stratified Sampling for Proportion Allocation”, Journal of Progressive Research in Mathematics, 16(4), pp. 3199-3205. Available at: http://scitecresearch.com/journals/index.php/jprm/article/view/1924 (Accessed: 23November2024).