Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ,Tunable Hollow Optical Waveguide and Their Applications for Photonic Integrated Circuis (invited paper),"IEICE of Japan Vol.J88-C, no. 6",,,2005,,,,https://cir.nii.ac.jp/crid/1010000782430861201,