E. M. Burbidge et G. R. Burbidge, « NGC 4676, a Peculiar System in the Coma Cluster of Galaxies. », Astrophysical Journal, vol. 133, , p. 726 (DOI10.1086/147076, Bibcode1961ApJ...133..726B)
E. M. Burbidge et G. R. Burbidge, « NGC 4676, a Peculiar System in the Coma Cluster of Galaxies. », Astrophysical Journal, vol. 133, , p. 726 (DOI10.1086/147076, Bibcode1961ApJ...133..726B)