@article{horner2016known,
  title = {Known unknowns: indirect energy effects of information and communication technology}
  author = {Horner, Nathaniel C. and Shehabi, Arman and Azevedo, Inês L.},
  journal = {Environmental Research Letters},
  url = {https://doi.org/10.1088/1748-9326/11/10/103001},
  year = {2016}
}