@misc{indiciae6cf007a99325,
  title = {Doppler peaks from active perturbations.},
  author = {J Magueijo and A Albrecht and D Coulson and P Ferreira},
  year = {1996},
  doi = {10.1103/physrevlett.76.2617},
  url = {https://pubmed.ncbi.nlm.nih.gov/10060746/},
  note = {Source identifier: 10060746}
}