Selection rules for Shubnikov space groups
P.M. van den Broek · Journal of Physics A Mathematical and General · 1978
The theory of induced PUA representations and selection rules developed in a previous paper (ibid., vol.11, p.813, 1978) is applied to the Shubnikov space groups. In particular, for each type of Shubnikov space group an expression which governs the vanishing of matrix elements of irreducible tensor operators is derived.