ASCA Obeservations of NGC 7172 Ryde, F. ; Larsson, S. ; Poutanen, J. ; Svensson, R. ; Mihara, T. ; Ueno, S. ; Yamashita, A. Abstract Publication: X-Ray Imaging and Spectroscopy of Cosmic Hot Plasmas Pub Date: 1997 Bibcode: 1997xisc.conf..299R