@article{tamura1961,
  title={Vibrations of Spherical Nuclei},
  author={Tar o Tamura and T. Udagawa},
  year={1961},
  journal={Progress of Theoretical Physics},
  doi={10.1143/ptp.25.1051},
  url={https://doi.org/10.1143/ptp.25.1051}
}