Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
BECKER W.,Clincal and volumetric analysis of three-wall intrabony defects following open flap debridement,J. Periodontol.,,,1985,57,,277-285,https://cir.nii.ac.jp/crid/1570291224449415296,