@misc{indiciaee3a3451511a9,
  title = {The global energy system.},
  author = {W Häfele and W Sassin},
  year = {1979},
  doi = {10.1002/bs.3830240303},
  url = {https://pubmed.ncbi.nlm.nih.gov/464990/},
  note = {Source identifier: 464990}
}