Semiclassical trajectory-coherent approximation in quantum mechanics:   II. High order corrections to the Dirac operators in external electromagnetic   field
  High approximations of semiclassical trajectory-coherent states (TCS) and of semiclassical Green function (in the class of semiclassically concentrated states) for the Dirac operator with anomalous Pauli interaction are obtained. For Schrodinger and Dirac operators trajectory-coherent representations are constructed up to any precision with respect to h, h-->0. 
V.G.Bagrov, V.V.Belov and A.Yu.Trifonov