wan ibrahim, mohd haziman bin, B. H. Abu Bakar, M. A. M. Johari, R. P. Jaya, and M. F. Arshad. “The Effect of Na2SO4 and NaCl Solutions on the Moisture Movement of Fired Clay Masonry Wall”. International Journal of Sustainable Construction Engineering and Technology, Vol. 2, no. 1, July 2011, https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/37.