On Double Stage Shrinkage Estimator For the Variance of Normal Distribution With Unknown Mean. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 30, n. 2, p. 177–191, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1441.. Acesso em: 6 may. 2024.