@article{territorialdifferencesinthespreadof,
  title = {Territorial differences in the spread of COVID-19 in European regions and US counties},
  author = {Fabrizio Natale and Stefano Maria Iacus and Alessandra Conte and Spyridon Spyratos and Francesco Sermi},
  year = {2021},
  eprint = {2103.08321},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.08321v1},
}