Strichartz and Smoothing Estimates for Schroedinger Operators with Large   Magnetic Potentials in R^3
  We show that the time evolution of the operator $H = -\Delta + i(A \cdot \nabla + \nabla \cdot A) + V$ in R^3 satisfies Strichartz and smoothing estimates under suitable smoothness and decay assumptions on A and V but without any smallness assumptions. We require that zero energy is neither an eigenvalue nor a resonance. 
M. Burak Erdogan, Michael Goldberg, Wilhelm Schlag