Patel, PA, and Fagun Shah. “Regression-Type Estimation of a Finite Population Mean in Two-Phase Sampling Using Auxiliary Variable and Attribute”. Journal of Statistical Research 55, no. 2 (March 30, 2022): 377–393. Accessed June 14, 2025. https://www.banglajol.info/index.php/JStR/article/view/58811.