Three X-ray transients in M 31 observed with SwiftR. Voss, W. Pietsch, F. Haberl, H. Stiele, J. Greiner, G. Sala, D. H. Hartmann and D. HatzidimitriouA&A, 489 2 (2008) 707-711DOI: https://doi.org/10.1051/0004-6361:20078970