Komossa, S., Halpern, J., Schartel, N., Hasinger, G., Santos-Lleo, M., & Predehl, P. (2004). A huge drop in the X-ray luminosity of the nonactive galaxy RX J1242.6-119A, and the first postflare spectrum: testing the tidal disruption scenario. The Astrophysical Journal, 603, L17-L20.