Redshift Distortions and Clustering in the PSCz Survey
  We have constrained the redshift-distortion parameter $\beta \equiv \Omega^{0.6}/b$ and the real-space power spectrum of the IRAS PSCz survey using a spherical-harmonic redshift-distortion analysis combined with a data compression method which is designed to deal with correlated parameters. Our latest result, $\beta=0.4 \pm 0.1$, strongly rules out $\beta=1$. 
W. E. Ballinger, A. N. Taylor, A. F. Heavens, H. Tadros