A Primer to Relativistic MOND Theory
  We first review the nonrelativistic lagrangian theory as a framework for the MOND equation. Obstructions to a relativistic version of it are discussed leading up to TeVeS, a relativistic tensor-vector-scalar field theory which displays both MOND and Newtonian limits. The whys for its particular structure are discussed and its achievements so far are summarized. 
Jacob D. Bekenstein (Jerusalem) and Robert H. Sanders (Groningen)