[AIP OBSERVATIONAL EVIDENCE FOR BLACK HOLES IN THE UNIVERSE: Proceedings of the 2nd Kolkata Conference on Observational Evidence for Black Holes in the Universe held in Kolkata India, 10–15 February 2008 and the Satellite Meeting on Black Holes, Neutron Stars, and Gamma-Ray Bursts held 16–17 February 2008 - Kolkata (India) (10–15 February 2008)] AIP Conference Proceedings - A Comparison of the p-free Model and the Hot MCD Model in ULXs