YUNUSA, A. M.; AUDU, A.; USMAN, U.; AREMU, K. O.; ADEJUMOBI, A. An Improved Versatile Optional Randomised Response Technique for Efficient Estimation in Sensitive Surveys. Journal of the CISON, Abuja, NG, v. 37, n. 1, p. 19–34, 2026. DOI: 10.63255/02-1934.25/05. Disponível em: https://journal.cison.org.ng/index.php/jotc/article/view/49. Acesso em: 29 aug. 2026.