Chandra Observations of the Collisional Ring Galaxy NGC 922DOI: info:10.1088/0004-637X/747/2/150v. 747150
Prestwich, Andrea H., Galache, J. L., Linden, T., Kalogera, V., Zezas, Andreas, Roberts, T. P., Kilgard, R., Wolter, A., and Trinchieri, G. 2012. "Chandra Observations of the Collisional Ring Galaxy NGC 922." The Astrophysical Journal, 747 150. https://doi.org/10.1088/0004-637X/747/2/150.