Kim, M. H., Choi, S. J., Kim, Y. R., Jang, J. H., Kim, J. H., Yoon, J.
K. (2004), A Study on the Proposal of Strength Presumption Equation and Evaluation
of Practical Application of High Strength Concrete by Non-Destructive Test, Journal
of the Architectural Institute of Korea Structure & Construction, Architectural Institute
of Korea, 20(2), 55-62