Erratum - the Detection of Extended X-Ray Emission Surrounding CD Galaxies in Poor Clusters Kriss, G. A. ; Canizares, C. R. ; McClintock, J. E. ; Feigelson, E. D. Abstract Publication: The Astrophysical Journal Pub Date: April 1981 DOI: 10.1086/183520 Bibcode: 1981ApJ...245L..51K