Chandra Spectroscopy of the Hot DA White Dwarf LB1919 and the PG1159 Star PG1520+5250 Adamczak, J. ; Werner, K. ; Rauch, T. ; Drake, J. J. ; Schuh, S. Abstract Publication: The X-ray Universe 2008 Pub Date: July 2008 Bibcode: 2008xru..confE..65A