Ghazi, A., Hafezi Moghadas, N., Sadeghi, H., Ghafoori, M., & Lashkaripur, G. R. (2015). Empirical relationships of shear wave velocity, SPT-N value and vertical effective stress for different soils in Mashhad, Iran. Annals of Geophysics, 58(3), S0325. https://doi.org/10.4401/ag-6635