Gerber, Richard; Lamb, Susan. A model for ring galaxies – ARP 147-like systems. Astrophysical Journal Letters (The American Astronomical Society). November 1992, 399 (1): L51–L54. Bibcode:1992ApJ...399L..51G. doi:10.1086/186604.
Gerber, Richard; Lamb, Susan. A model for ring galaxies – ARP 147-like systems. Astrophysical Journal Letters (The American Astronomical Society). November 1992, 399 (1): L51–L54. Bibcode:1992ApJ...399L..51G. doi:10.1086/186604.