@misc{indiciaed011242e3957,
  title = {Letter: Principal component analysis technique recommended.},
  author = {P P Talwar},
  year = {1976},
  doi = {10.2105/ajph.66.3.297-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/1259071/},
  note = {Source identifier: 1259071}
}