A Measurement of the Quadrupole Power Spectrum in the Clustering of the   2dF QSO Survey
  We report a measurement of the quadrupole power spectrum in the two degree field (2dF) QSO redshift (2QZ) survey. The analysis uses an algorithm parallel to that for the estimation of the standard monopole power spectrum without first requiring computation of the correlation function or the anisotropic power spectrum. The error on the quadrupole spectrum is rather large but the best fit value of the bias parameter from the quadrupole spectrum is consistent with that from previous investigations of the 2dF data. 
Kazuhiro Yamamoto, Masashi Nakamichi, Akinari Kamino, Bruce A.   Bassett, Hiroaki Nishioka