@misc{indiciae921f048dadcb,
  title = {Root calculus.},
  author = {E L Shaffer},
  year = {1983},
  doi = {10.1016/0030-4220(83)90112-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/6580604/},
  note = {Source identifier: 6580604}
}