NED NGC 3003. Jet Propulsion Laboratory, California Institute of Technology. «Results for NGC 3003». NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Henta 23. oktober 2012.
NED NGC 3344. Jet Propulsion Laboratory, California Institute of Technology. «Results for NGC 3344». NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Henta 23. oktober 2012.
NED NGC 3504. Jet Propulsion Laboratory, California Institute of Technology. «Results for NGC 3504». NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Henta 23. oktober 2012.
NED NGC 3486. Jet Propulsion Laboratory, California Institute of Technology. «Results for NGC 3486». NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Henta 23. oktober 2012.
NED NGC 2859. Jet Propulsion Laboratory, California Institute of Technology. «Results for NGC 2859». NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Henta 23. oktober 2012.
Robertson et al. 1995. Robertson, J. W.; Honeycutt, R. K.; Turner, G. W.; Honeycutt; Turner (1995). «RZ Leonis Minoris, PG 0943+521, and V1159 Orionis: Three Cataclysmic Variables with Similar and Unusual Outburst Behavior». Publications of the Astronomical Society of the Pacific107: 443–49. Bibcode:1995PASP..107..443R. doi:10.1086/133572. CS1 maint: Multiple names: authors list (link)
Robertson et al. 1995. Robertson, J. W.; Honeycutt, R. K.; Turner, G. W.; Honeycutt; Turner (1995). «RZ Leonis Minoris, PG 0943+521, and V1159 Orionis: Three Cataclysmic Variables with Similar and Unusual Outburst Behavior». Publications of the Astronomical Society of the Pacific107: 443–49. Bibcode:1995PASP..107..443R. doi:10.1086/133572. CS1 maint: Multiple names: authors list (link)