@misc{indiciae80e185d9263a,
  title = {Optimal external power or efficiency?},
  author = {D Burkhoff and K Sagawa},
  year = {1988},
  doi = {10.1152/ajpheart.1988.255.5.h1263},
  url = {https://pubmed.ncbi.nlm.nih.gov/3189584/},
  note = {Source identifier: 3189584}
}