Massive spinning particle in any dimension. II. (Half-)integer spins
  The general model of an arbitrary spin massive particle in any dimensional space-time is derived on the basis of Kirillov - Kostant - Souriau approach.   Keywords: spinning particles, Poincar\'e group, orbit method, constrained dynamics, geometric quantization. 
S. L. Lyakhovich, A. A. Sharapov and K. M. Shekhter