CENTRAL EUROPEAN JOURNAL OF PHYSICS, vol.5, no.1, pp.70-82, 2007 (SCI-Expanded)
We consider a model of d fermions where creation and annihilation operators of different fermions commute. We show that this particle algebra is invariant under an inhomogeneous quantum group. (c) Versita Warsaw and Springer-Verlag Berlin Heidelberg. All rights reserved.