Electronic Structure Calculations with Dynamical Mean-Field Theory: A   Spectral Density Functional Approach
  We present a review of the basic ideas and techniques of the spectral density functional theory which are currently used in electronic structure calculations of strongly-correlated materials where the one-electron description breaks down. We illustrate the method with several examples where interactions play a dominant role: systems near metal-insulator transition, systems near volume collapse transition, and systems with local moments. 
G. Kotliar, S. Y. Savrasov, K. Haule, V. S. Oudovenko, O. Parcollet   and C.A. Marianetti