TY - RPRT TI - Doppler peaks from active perturbations. AU - J Magueijo AU - A Albrecht AU - D Coulson AU - P Ferreira PY - 1996 DO - 10.1103/physrevlett.76.2617 UR - https://pubmed.ncbi.nlm.nih.gov/10060746/ ID - 10060746 ER -