@misc{indiciaebbc688f48045,
  title = {A multivariate data reduction system.},
  author = {J R Beck and H M Rawnsley},
  year = {1978},
  doi = {10.1007/bf02222317},
  url = {https://pubmed.ncbi.nlm.nih.gov/739193/},
  note = {Source identifier: 739193}
}