Szabo, Thad; Pierpaoli, Elena; Dong, Feng (20 July 2011). "An Optical Catalog of Galaxy Clusters Obtained from an Adaptive Matched Filter Finder Applied to SDSS DR6". The Astrophysical Journal. 736 (1): 21. arXiv:1011.0249. doi:10.1088/0004-637X/736/1/21.
Szabo, Thad; Pierpaoli, Elena; Dong, Feng (20 July 2011). "An Optical Catalog of Galaxy Clusters Obtained from an Adaptive Matched Filter Finder Applied to SDSS DR6". The Astrophysical Journal. 736 (1): 21. arXiv:1011.0249. doi:10.1088/0004-637X/736/1/21.