J. Planelles et Cm. Zicovichwilson, A SIMPLE PROOF FOR THE FORMULA TO GET SYMMETRIZED POWERS OF GROUP-REPRESENTATIONS, International journal of quantum chemistry, 47(4), 1993, pp. 319-323
A general formula to decompose the p-power of irreducible representati
ons of an arbitrary space group into sum of sets of irreducible repres
entations of such a group, having identical permutational symmetry, is
presented. Its proof is based upon a straightforward application of t
he properties of the generalized projection (shift) operators. (C) 199
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