Application of microtremor HVSR method for preliminary assessment of seismic site effect in Ngipik landfill, GresikSiti Nurlita Fitri, Ria Asih Aryani Soemitro, Dwa Dewa Warnana and Nila SutraMATEC Web Conf., 195 (2018) 03017DOI: https://doi.org/10.1051/matecconf/201819503017