1. Bennett & WMAP team 2007, NASA Web site, http://lambda.gsfc.nasa.gov/product/map/dr2/-ptsrc_catalog_get.cfm
2. Briggs, D. S., & Cornwell, T. J. 1992, in Astronomical Data Analysis Software and Systems I, ed. D. M. Worrall, C. Biemesderfer, & J. Barnes, ASP Conf. Ser., 25, 170
3. The NRAO VLA Sky Survey
4. Cornwell, T. J., Golap, K., & Bhatnagar, S. 2005, in Astronomical Data Analysis Software and Systems XIV, ed. P. Shopbell, M. Britton, & R. Ebert, ASP Conf. Ser., 347, 86