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  author = {H. Tsutsui and T. Habuchi and S. Tsuji-Iio and R. Shimada},
  title = {Analysis of Stress Distribution in Helical Coils with Geodesic Windings based on Virial Theorem},
  journal = {IEEE Transactions on Applied Superconductivity},
  year = 2012,
}

@article{CTT100630796,
  author = {T. Habuchi and H. Tsutsui and SHUNJI IIO and R. Shimada},
  title = {Optimization of Stress Distribution of Helical Coils with Cable in Conduit Configuration},
  journal = {IEEE Trans. Appl. Supercond.},
  year = 2011,
}

@inproceedings{CTT100615500,
  author = {Takayuki Habuchi and HIROAKI TSUTSUI and SHUNJI IIO and ryuichi shimada},
  title = {3-Dimesional Stress Analysis of Virial-Limit Coils},
  booktitle = {IEEE Transactions on Applied Superconductivity},
  year = 2010,
}