著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) HILBK U.,Selective OTDR Measurement at the Central Office of Individual Fiber Links in a PON,"Proc. OFC'97, Dallas (US), Feb. 16-22",,,1997,,,,https://cir.nii.ac.jp/crid/1571980075739948800,