SIGINAM, Sambasiva Rao. On the square root of a matrix. Journal of Global Research in Mathematical Archives(JGRMA), [S. l.], v. 1, n. 11, p. 30–33, 2014. Disponível em: https://jgrma.com/index.php/jgrma/article/view/108. Acesso em: 29 apr. 2025.