@misc{indiciaec85dca60acd9,
  title = {An Extremely Simple Method of Periodogram Analysis.},
  author = {D Alter},
  year = {1933},
  doi = {10.1073/pnas.19.3.335},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577520/},
  note = {Source identifier: 16577520}
}