Distant Cluster Hunting: A Comparison Between the Optical and X-Ray Luminosity Functions from an Optical/X-Ray Joint Survey

Distant Cluster Hunting. II. A Comparison of X-Ray and Optical Cluster Detection Techniques and Catalogs from the ROSAT Optical X-Ray Survey

M. Donahue, C.A. Scharf, J. Mack, P. Lee, M. Postman, P. Rosati, M. Dickinson, M. Voit, and J. Stocke, The Astrophysical Journal, 569, 689, 2002.