@misc{indiciae109a786e75c7,
  title = {Boring's Mach and state variables.},
  author = {R L Shull},
  year = {1993},
  doi = {10.1901/jeab.1993.60-485},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812716/},
  note = {Source identifier: 16812716}
}