Reduction of earthquake amplification by seismic metamaterials made of circular positioned concrete pilesSelcuk Kacin, Murat Ozturk, Umur Sevim, Muharrem Karaaslan, Oguzhan Akgol, Zafer Ozer, Mustafa Demirci, Emin Unal, Bayram Mert and Mustafa BaşarE3S Web Conf., 404 (2023) 03006DOI: https://doi.org/10.1051/e3sconf/202340403006