D. SALMAN, Muna. On Double Stage Shrinkage Estimator For the Variance of Normal Distribution With Unknown Mean. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 30, n. 2, p. 177–191, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1441. Acesso em: 14 mar. 2025.