@article{lei2021best,
  title = {Best practices for analyzing the direct energy use of blockchain technology systems: Review and policy recommendations}
  author = {Lei, Nuoa and Masanet, Eric and Koomey, Jonathan},
  journal = {Energy Policy},
  url = {https://www.sciencedirect.com/science/article/pii/S0301421521002925},
  year = {2021}
}