Hanny's Voorwerp . Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497 - Rampadarath, Hayden; Garrett, M.; Józsa, G.; Muxlow, T.; Oosterloo, T.; Paragi, Z.; Beswick, R.; van Arkel, H.; Keel, W.; Schawinski, K. (EDP Sciences, 2010)