The X-Ray Spectrum and Structure of the Puppis a Supernova Remnant Zarnecki, J. C. ; Culhane, J. L. ; Toor, A. ; Seward, F. D. ; Charles, P. A. Abstract Publication: The Astrophysical Journal Pub Date: January 1978 DOI: 10.1086/182598 Bibcode: 1978ApJ...219L..17Z