Hussain M, Khan L, Zaman Q, Abdurrahman Sabir. Efficient Class of Variance Estimators for Population using Supplementary Information in Stratified Random Sampling. VFAST trans. math. [Internet]. 2024 May 24 [cited 2026 Apr. 28];12(1):264-79. Available from: https://vfast.org/journals/index.php/VTM/article/view/1794