Use of group theory and Clifford algebra in the study of generalized   Dirac equation for particles with arbitrary spin
  Using condition of relativistic invariance, group theory and Clifford algebra the component Lorentz invariance generalized Dirac equation for a particle with arbitrary mass and spin is suggested, where In the case of half-integral spin particles, this equation is reduced to the sets of two-component independent matrix equations. It is shown that the relativistic scalar and integral spin particles are described by component equation. 
I.I.Guseinov