PANICHKITKOSOLKUL, W. Confidence Interval for the Ratio of Bivariate Normal Means with a Known Coefficient of Variation. Suan Sunandha Science and Technology Journal, Bangkok, Thailand, v. 4, n. 1, p. 1–13, 2022. Disponível em: https://li02.tci-thaijo.org/index.php/ssstj/article/view/293. Acesso em: 17 sep. 2026.