Observations of the Supernova Remnant Cas A with the Einstein Observatory Murray, S. ; Epstein, A. ; Fabbiano, P. ; Gorenstein, P. ; Griffiths, R. ; Madejski, G. ; Fabian, A. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: March 1979 Bibcode: 1979BAAS...11..462M