Integrable model of boundary interaction: the paperclip

@article{Lukyanov2003IntegrableMO,
  title={Integrable model of boundary interaction: the paperclip},
  author={Sergei L. Lukyanov and Evgueniy Vitchev and Alexander B. Zamolodchikov},
  journal={Nuclear Physics},
  year={2003},
  volume={683},
  pages={423-454}
}

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