Half-life of $sup 41$Ca

@inproceedings{Mabuchi1974HalflifeO,
  title={Half-life of \$sup 41\$Ca},
  author={Hisao Mabuchi and Hisahide Takahashi and Yuji Nakamura and Kenji Notsu and Hiroshi Hamaguchi},
  year={1974}
}