@misc{indiciaec01aaec58ebd,
  title = {A scheme for integration.},
  author = {A Porter},
  year = {1970},
  doi = {10.1016/s0140-6736(70)90719-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4189596/},
  note = {Source identifier: 4189596}
}