The Ejecta Structure of the Oxygen-rich SNR Puppis A revealed by XMM-Newton Katsuda, S. ; Mori, K. ; Tsunemi, H. ; Park, S. ; Hwang, U. ; Burrows, D. N. ; Slane, P. O. ; Hughes, J. P. Abstract Publication: XMM-Newton: The Next Decade Pub Date: June 2007 Bibcode: 2007xnnd.confP..12K