I found this extremely handy reference on Black hole calculations and models to measure black hole accretion disk/jets. The article also covers several types of BH non rotating and rotating. Methodologies that can be used to distinquish between Neutron and black hole event horizons. http://arxiv.org/abs/1104.5499 Its been recently updated on Jan 2013, so is nice and up to date. I should warn everyone its 91 pages, however it has a decent listing of applicable formulas and model references.