@article{CTT100795853,
  author = {Nao Nakanishi and Tetsuya Yokoyama and Akira Ishikawa},
  title = {Refinement of the micro-distillation technique for isotopic analysis of geological samples with pg-level osmium contents},
  journal = {Geostandards and Geoanalytical Research},
  year = 2019,
}

@article{CTT100789928,
  author = {Satoki Okabayashi and Tetsuya Yokoyama and Nao Nakanishi and Hikaru Iwamori},
  title = {Fractionation of highly siderophile elements in metal grains from unequilibrated ordinary chondrites: Implications for the origin of chondritic metals},
  journal = {Geochimica Et Cosmochimica Acta},
  year = 2019,
}