Orbital periods of cataclysmic variables identified by the SDSS - VIII. A slingshot prominence in SDSS J003941.06 + 005427.5?J. Southworth, T. R. Marsh, B. T. Gänsicke, D. Steeghs and C. M. CopperwheatA&A, 524 (2010) A86DOI: https://doi.org/10.1051/0004-6361/201015633