@misc{indiciae7326288d63c6,
  title = {Extraction frequencies.},
  author = {J R Valinoti},
  year = {1995},
  doi = {10.1043/0003-3219(1995)065<0084:ar>2.0.co;2},
  url = {https://pubmed.ncbi.nlm.nih.gov/7785809/},
  note = {Source identifier: 7785809}
}