@article{oai:nipr.repo.nii.ac.jp:00004496,
 author = {Takaoka,Nobuo and Miura,Yasunori},
 journal = {Proceedings of the NIPR Symposium on Antarctic Meteorites},
 month = {Oct},
 note = {P(論文), Helium and neon isotopes were investigated in two beds of the Cretaceous-Tertiary (K-T) boundary collected at Stevns Klint in Denmark. Observed enrichments in ^3He and ^<21>Ne relative to atmospheric abundances suggest that the K-T boundary sediment contains spallogenic He and Ne. Although this is a favorable result for the asteroid impact hypothesis, we need more data on noble gas isotopes not only in the K-T boundary sediments but also in sedimentary rocks other than the K-T boundary.},
 pages = {344--350},
 title = {Noble gases in the K-T boundary clay from Stevns Klint, Denmark},
 volume = {2},
 year = {1989}
}