@misc{indiciaec25950e5dc7f,
  title = {Causality and the power spectrum.},
  author = {J Robinson and BD Wandelt},
  year = {1996},
  doi = {10.1103/physrevd.53.618},
  url = {https://pubmed.ncbi.nlm.nih.gov/10020041/},
  note = {Source identifier: 10020041}
}