Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Gaku Kimura and Toshiaki Iwai,Surface profiling of an absorber embedded in a dense medium by spatial integration of the backscattered light,SPIE Proceedings,0277-786X,SPIE,1999-07-19,3749,,727-728,https://cir.nii.ac.jp/crid/1870302167710573696,https://doi.org/10.1117/12.354978