Delbrück scattering in a strong external field.

@article{Scherdin1992DelbrckSI,
  title={Delbr{\"u}ck scattering in a strong external field.},
  author={Scherdin and Schaefer and Greiner and Soff},
  journal={Physical review. D, Particles and fields},
  year={1992},
  volume={45 8},
  pages={2982-2987}
}