1. Ahn, S. H., “An Evaluation of Green Manufacturing Technologies based on Research Databases” Int. J. Precie. Eng. Manuf.-Green Tech., Vol. 1, No. 1, pp. 5–9, 2014.
2. Kang, H. J., Ryu, G. S., Koh, K. T., Kang, S. T., Park, J. J., and et al., “Effect of Alkaline Activator and Curing Condition on the Compressive Strength of Cementless Fly Ash Based Alkali-Activated Mortar” Journal of the Korean Institute of Resources Recycling, Vol. 18, No. 2, pp. 39–50, 2009.
3. Hong, S. H., Lee, B. D., and Han, S. H., “Application of Fly Ash Concrete in the Pavement” Journal of Korea Concrete Institute, Vol. 20, No. 1, pp. 701–704, 2008.
4. Ahn, N. S., Lee, J. H., and Lee, Y. H., “Sulfate Attack According to the Quantity of Composition of Cement and Mineral Admixtures” Journal of the Korea Institute of Building Construction, Vol. 11, No. 6, pp. 547–556, 2011.
5. Park, J. Y., Kim, Y. T., and Kim, H. J., “Carbonation of Coal Fly Ash for Construction Materials” Journal of the Korean Crystal Growth and Crystal Technology, Vol. 22, No. 3 pp. 147–151, 2012.