Yosboonruang N, Niwitpong S. Statistical Inference on the Ratio of Delta-Lognormal Coefficients of Variation. Applied Science and Engineering Progress [internet]. 2021 Jul. 13 [cited 2026 Sep. 17];14(3):489-502. available from: https://ph02.tci-thaijo.org/index.php/ijast/article/view/244835