When permissioned blockchains deliver more decentralization than permissionless

@article{Bakos2021WhenPB,
  title={When permissioned blockchains deliver more decentralization than permissionless},
  author={Yannis Bakos and Hanna Halaburda and Christoph M{\"u}ller-Bloch},
  journal={Communications of the ACM},
  year={2021},
  volume={64},
  pages={20 - 22}
}
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