@article{oai:naragakuen.repo.nii.ac.jp:00000487,
 author = {藪下, 信 and Yabushita, Shin and Wada, K. and Fujii, T. and Kawakami, S.},
 journal = {情報学フォーラム, Information Science Forum},
 month = {},
 note = {Measurement has been made of Ir content in samples collected from P/T boundary layers in
Gifu, Japan. The samples were collected from the site where fullerenes have been found. The
samples were first crashed into powders and then activated in a nuclear reactor. The gamma
ray measurement of the samples was made after cooling for two months. None of the samples
analyzed yielded Ir content comparable with the well-known K/T boundary layer at several
ppb's. In view of other experiments which yielded negative results, it is tentatively concluded
that the P/T boundary does not provided a geological evidence of extra-terrestrial cause in the
form of Iridium.},
 pages = {1--6},
 title = {Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method},
 volume = {2},
 year = {2003},
 yomi = {ヤブシタ, シン}
}