SINGH, N. A Note On The Unbiased Estimation Of Powers Of The Variance And its Application. Defence Science Journal, [S. l.], v. 14, n. 1, p. 23–28, 2014. DOI: 10.14429/dsj.14.7129. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7129. Acesso em: 6 aug. 2025.