Screened Perturbation Theory

@article{Karsch1997ScreenedPT,
  title={Screened Perturbation Theory},
  author={Frithjof Karsch and Andr{\'a}s Patk{\'o}s and P{\'e}ter Petreczky},
  journal={Physics Letters B},
  year={1997},
  volume={401},
  pages={69-73}
}
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