Park, S. , Kim, J. , Shin, E. , Han, S. (2014). 'Compressive Strength Evaluation of Underwater Concrete Structures Integrating the Combination of Rebound Hardness and Ultrasonic Pulse Velocity Methods with Artificial Neural Networks'. World Academy of Science, Engineering and Technology, Open Science Index 85, International Journal of Civil and Environmental Engineering, 8(1), 17 - 21.