mishra P, Singh R, Khare S. ESTIMATION OF POPULATION VARIANCE IN LOG – PRODUCT TYPE ESTIMATORS UNDER DOUBLE SAMPLING SCHEME. JRSS [Internet]. 2019 Oct. 10 [cited 2026 Apr. 20];12(02):11-20. Available from: https://journals.riverpublishers.com/index.php/JRSS/article/view/20643