Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
FLEMMIG TF,The effect of working parameters on root substance removal using a piezoelectric ultrasonic scaler in vitro,J Clin Periodontol,,,1998,25,,158-163,https://cir.nii.ac.jp/crid/1570572701269805184,