Seo, S. K., Chu, Y. S., Lee, J. K., Song, H., and Park, J. W. (2013) A Study on Fabrication
                           and Characterization of Inorganic Insulation Material by Hydrothermal Synthesis Method
                           (1). Journal of the Korean Recycled Construction Resources Institute 1(3), 219-224.
                           (In Korean)
