Balcells, Marc; Stanford, S. A. (October 1990). "A counterrotating core in the merger remnant candidate NGC 3656 (ARP 155)". The Astrophysical Journal. 362: 443. Bibcode:1990ApJ...362..443B. doi:10.1086/169281.
Balcells, Marc; Stanford, S. A. (October 1990). "A counterrotating core in the merger remnant candidate NGC 3656 (ARP 155)". The Astrophysical Journal. 362: 443. Bibcode:1990ApJ...362..443B. doi:10.1086/169281.
Bertaud, Ch. (22 June 1963). Thernöe, K. A. (ed.). "SUPERNOVA IN NGC 3656". Central Bureau for Astronomical Telegrams. 1834. Observatory Copenhagen, IAU: 1. Retrieved 1 December 2024.
"List of Supernovae". Central Bureau for Astronomical Telegrams. IAU. Retrieved 29 December 2015.