Integration by parts: The algorithm to calculate β-functions in 4 loops

@article{Chetyrkin1981IntegrationBP,
  title={Integration by parts: The algorithm to calculate $\beta$-functions in 4 loops},
  author={Konstantin G. Chetyrkin and Fyodor V. Tkachov},
  journal={Nuclear Physics},
  year={1981},
  volume={192},
  pages={159-204}
}

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