@article{oai:nifs-repository.repo.nii.ac.jp:00003544,
 author = {"Akiyama,  T. and Kawahata,  K. and Tokuzawa,  T. and Ashikawa,  N. and Tokitani,  M. and Okajima,  S. and Nakayama,  K. and Yoshida,  N. and Tokunaga,  K. and Tsuji-Iio,  S."},
 journal = {Annual Report of National Institute for Fusion Science},
 title = {Change of Optical Properties of Retro-reflector Installed in LHD},
 volume = {Annual Report Apr.2006-Mar.2007}
}