Canonical equivalence between massive spin 1 theories
  The model of Cremmer-Scherck and Proca are considered in dimensions greater than 3+1. It is obtained that the Proca model correspond to a gauged fixed version of the Cremmer-Scherck one, and we show their canonical equivalence. 
Pio J. Arias (1) and Jean C. Perez-Mosquera (1 and 2) ((1) Caracas, U.   Central, (2)Texas U.)