Capital Structure

Any of the AF gurus have any required reading regarding capital structure and Tiered capital requirements? I am reading about the Basle I/II/III stuff right now and I want to get my hands on some good white paper or other quality material that clearly explains capital structure but goes more in depth. Currently I am reading this; http://www.bis.org/publ/bcbsc111.pdf?noframes=1 However, it’s pretty out of date due to Fwank-Dodd bill (typo is on purpose).