@techreport{oai:niigata-u.repo.nii.ac.jp:00033135,
 author = {Ishii, Satomi and Suzui, Nobuo and Ishioka, Noriko and Kawachi, Naoki and Matsuhashi, Shimpei and Otake, Norikuni and Ohyama, Takuji and Fujimaki, Shu},
 month = {Nov},
 title = {The Production of 13N-labeled Nitrogen Gas for Imaging of Nitrogen Fixation by Soybean Nodule},
 year = {2008}
}