1. THE SEVENTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY
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3. Beichman, C. A., Neugebauer, G., Habing, H. J., Clegg, P. E., & Chester, T. J. 1988, Infrared astronomical satellite (IRAS) catalogs and atlases, Vol. 1: Explanatory supplement (Washington DC: GPO), http://irsa.ipac.caltech.edu/applications/Gator/
4. The ROSAT North Ecliptic Pole Deep Survey