WASET
    Seunghee Park and  Junkyeong Kim and  Eun-Seok Shin and  Sang-Hun Han,  Compressive Strength Evaluation of Underwater  Concrete Structures Integrating the Combination of  Rebound Hardness and Ultrasonic Pulse Velocity  Methods with Artificial Neural Networks.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 85(1). 17 - 21
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/9997020.