أمير عبد اللــــــه ر. A Letter in Mentioning the Stomach Number. College of Basic Education Research Journal, [S. l.], v. 10, n. 4, p. 197–227, 2011. Disponível em: https://stats.uomosul.edu.iq/index.php/berj/article/view/39700. Acesso em: 26 oct. 2025.