@article{oai:tohoku.repo.nii.ac.jp:00026651,
 author = {Wang, Yongjin and Hu, Fangren and Sameshima, Hidehisa and Hane, Kazuhiro},
 issue = {2},
 journal = {Optics Express},
 month = {},
 note = {学術論文 (Article)},
 pages = {773--779},
 title = {Fabrication and characterization of freestanding circular GaN grating},
 volume = {18},
 year = {2010}
}