Mosleh Salman, Mohammed, et al. “Empirical Formulas for Estimation of Some Physical Properties of Gas Concrete Produced by Adding Aluminum Powder”. Journal of Engineering and Sustainable Development, vol. 14, no. 4, Dec. 2010, pp. 65-78, https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1410.