Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Rikimaru Shinya and Murakami Sunao and Kitamura Kanato and Ito Takahiro,3P3-4 Effect of Additional Thin Film of Piezoelectric Materials on Frequency Response of Surface Acoustic Devices,Proceedings of Symposium on Ultrasonic Electronics,1348-8236,Institute for Ultrasonic Elecronics,2018-10-29,39,0,n/a,https://cir.nii.ac.jp/crid/1390297272117210880,https://doi.org/10.24492/use.39.0_3p3-4