ns in Relativistic Field Theory," JETP Lett. 49 (1989) 541 [Pisma Zh. Eksp. Thor. Fiz. 49 (1989) 473]. [172] S. M. Klishevich, M. S. Plyushchay and M. Rausch de Traubenberg, "Fractional helicity, Lorentz symmetry breaking, compactification and anyons," Nucl. Phys. B 616 (2001) 419 [hep-th/0101190]. [173] L. Mezincescu