A pair of Seyferts identified from a ROSAT bright sourceJ.-H. Wu, Q.-R. Yuan, X.-T. He, W. Voges, R.-D. Nan, R. F. Green and X.-Z. ZhangA&A, 379 3 (2001) 860-863DOI: https://doi.org/10.1051/0004-6361:20011410