A ROSAT deep survey of the galactic plane 180° < l < 280° Pye, J. P. ; Morley, J. E. ; Warwick, R. S. ; Pilkington, J. ; Micela, G. ; Sciortino, S. ; Favata, F. Abstract Publication: Memorie della Societa Astronomica Italiana Pub Date: 1997 Bibcode: 1997MmSAI..68.1089P