Fabricant, Daniel G.; Bautz, Marshall W.; McClintock, Jeffrey E. (1 January 1994). "Galaxy evolution in distant, x-ray selected clusters of galaxies, 2: CL 0303+1658 and CL 0303+1717". The Astronomical Journal. 107: 8–23. Bibcode:1994AJ....107....8F. doi:10.1086/116831.
Fabricant, Daniel G.; Bautz, Marshall W.; McClintock, Jeffrey E. (1 January 1994). "Galaxy evolution in distant, x-ray selected clusters of galaxies, 2: CL 0303+1658 and CL 0303+1717". The Astronomical Journal. 107: 8–23. Bibcode:1994AJ....107....8F. doi:10.1086/116831.