Directionally Effect Observation in Topographical Site-Effects at Feden-Sema Range (Guelma-Northern Algeria) from Ambient VibrationKhalissa Layadi, Yacine Mohamed Tebbouche, Redouane Chimouni, Ahmed Saadi and Hamoud BeldjoudiMATEC Web Conf., 394 (2024) 03005DOI: https://doi.org/10.1051/matecconf/202439403005