Emergence of Fresnel diffraction zones in gravitational lensing by a cosmic string

@article{FernandezNunez2017EmergenceOF,
  title={Emergence of Fresnel diffraction zones in gravitational lensing by a cosmic string},
  author={Isabel Fern'andez-N'unez and Oleg Bulashenko},
  journal={Physics Letters A},
  year={2017},
  volume={381},
  pages={1764-1772}
}

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