On Past Extropy and Negative Cumulative Extropy Properties of Ranked Set Sampling and Maximum Ranked Set Sampling with Unequal Samples. Statistics, Optimization & Information Computing, [S. l.], v. 11, n. 3, p. 740–754, 2023. DOI: 10.19139/soic-2310-5070-1453. Disponível em: https://www.iapress.org/index.php/soic/article/view/1453. Acesso em: 23 apr. 2026.