Ákos Wolf and  Richard P. Ray,  Comparison and Improvement of the Existing Cone Penetration Test Results: Shear Wave Velocity Correlations for Hungarian Soils.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2017, vol. 124(4). 362 - 371
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10007102.