Identities emerging from two sample U-statistics : Identities by U-statistics. Journal of the Kerala Statistical Association, [S. l.], v. 24, n. 1, p. 1–11, 2013. Disponível em: https://ojs.ksa.org.in/index.php/JKSA/article/view/3. Acesso em: 18 oct. 2026.