Bergey's manual of systematic bacteriology. Volume one, The Archaea and the deeply branching and phototrophic bacteria / David R. Boone, Richard W. Castenholz, editors, volume one ; George M. Garrity, editor-in-chief.    New York, N.Y. :  Springer,  c2001 . xxi, 721 s.
http://www.springerlink.com/content/978-0-387-21609-6