@misc{iwasaki2003flux,
  title={A flux tube model for glueballs},
  author={Masaharu Iwasaki and Shin-Ichi Nawa and Takayoshi Sanada and Fujio Takagi},
  year={2003},
  eprint={hep-ph/0305097},
  archivePrefix={arXiv},
  primaryClass={hep-ph},
  doi={10.1103/PhysRevD.68.074007},
  url={https://arxiv.org/abs/hep-ph/0305097}
}