Amiri S, Hassani H, Heravi S. An Efficient Variant of Ranked Set Sampling, Probability Proportional to Size with Application to Economic Data. AJS [Internet]. 2024 Jan. 16 [cited 2025 Oct. 12];53(2):17-31. Available from: https://www.ajs.or.at/index.php/ajs/article/view/1622