Hickox, R., Myers, A., Brodwin, M., Alexander, D., Forman, W., Jones, C., …Mullaney, J. (2011). Clustering of Obscured and Unobscured Quasars in the Boötes Field: Placing Rapidly Growing Black Holes in the Cosmic Web. Astrophysical Journal, 731(2), Article 117. https://doi.org/10.1088/0004-637x/731/2/117