Critical string from non-Abelian vortex in four dimensions

@article{Shifman2015CriticalSF,
  title={Critical string from non-Abelian vortex in four dimensions},
  author={Mikhail A. Shifman and Alexei V Yung},
  journal={Physics Letters B},
  year={2015},
  volume={750},
  pages={416-419}
}

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