Duong, N. A., K. Q. Nam, and T. T. Anh. “RED BASALTIC SOILS-THE RAW MATERIAL SOURCE FOR PRODUCTION OF NON-CALCINED BRICK”. Vietnam Journal of Earth Sciences, vol. 36, no. 3, Sept. 2014, pp. 214-20, doi:10.15625/0866-7187/36/3/5904.