@misc{indiciae0bee2d29b87b,
  title = {Sequential subtraction.},
  author = {R Rivoir and P Huber},
  year = {1974},
  doi = {10.1007/bf00341875},
  url = {https://pubmed.ncbi.nlm.nih.gov/4605106/},
  note = {Source identifier: 4605106}
}