On the mass-to-light ratios of fossil groups. Are they simply dark clusters?
Monthly Notices of the Royal Astronomical Society
Volume 418, Issue 3, December 2011, Pages: 2054–2073, Robert N. Proctor, Claudia Mendes de Oliveira, Renato Dupke, Raimundo Lopes de Oliveira, Eduardo S. Cypriano, Eric D. Miller and Eli Rykoff
Article first published online : 31 OCT 2011, DOI: 10.1111/j.1365-2966.2011.19625.x