@article{HelmersChangDauwels2022,
  author    = {Eckard Helmers and Chia Chien Chang and Justin Dauwels},
  title     = {Carbon footprinting of universities worldwide: Part I — objective comparison by standardized metrics},
  journal   = {Environmental Sciences Europe},
  volume    = {33},
  pages     = {1 -- 25},
  doi       = {10.1186/s12302-021-00454-6},
  year      = {2022},
}