Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sutoh Atsushi and Sano Akihide and Toide Takeo and Koike Yoshinori and Oda Kazuhiro,Investigation of optical span switching on DWDM,Proceedings of the Society Conference of IEICE,,"The Institute of Electronics, Information and Communication Engineers",2001-08-29,2001,2,436,https://cir.nii.ac.jp/crid/1574231877126199168,