Canonical Analysis of the First Order Form of Topologically Massive   Electrodynamics
  The first order form of a three dimensional U(1) gauge theory in which a gauge invariant mass term appears is analyzed using the Dirac procedure. The form of the gauge transformation which leaves the action invariant is derived from the constraints present. 
R. N. Ghalati, N. Kiriushcheva, S. V. Kuzmin and D. G. C. McKeon