HÜRLIMANN, W. A First Digit Theorem For Powers of Perfect Powers. Communications in Mathematics and Applications, [S. l.], v. 5, n. 3, p. 91–99, 2014. DOI: 10.26713/cma.v5i3.253. Disponível em: http://www.rgnpublications.com/journals/index.php/cma/article/view/253. Acesso em: 3 oct. 2022.