@article{ijtech-682,
				title={Investigation of Subsurface Characteristics by using a Vs30 Parameter and a Combination of the Hvsr and Spac Methods for Microtremor Arrays},
				author={Sigit Pramono,Widjojo Prakoso,Astri Rahayu,Ariska Rudyanto,Fajri SukurRahmatullah,sofian Piandatte,Phil Cummins},
				volume={8},
				number={6},
				year={2017},
				month={Dec},
				pages={983-992},
				DOI={https://doi.org/10.14716/ijtech.v8i6.682},
				journal={International Journal of Technology},
				ISSN={2087-2100}}