I. Ouchen, Y. El. Fellah, A. E.-A. Khairy Abd El- Aal, and M. Harnafi, “Soil amplification factors at the seismographic network stations sites in morocco from seismic ambient noise”, IJET, vol. 7, no. 4, pp. 4304–4310, Dec. 2018, doi: 10.14419/ijet.v7i4.20216.