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J. Appl. Cryst. (2003). 36, 951-952
https://doi.org/10.1107/S0021889803005946
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INVARIANTS: program for obtaining a list of invariant polynomials of the order-parameter components associated with irreducible representations of a space group

D. M. Hatch and H. T. Stokes
The program INVARIANTS, which aims to generate symmetry-allowed invariants associated with a given high-symmetry group H and the primary order parameter, along with invariants and coupling polynomials of the secondary order parameters, is described.
Keywords: order parameters; space group; irreducible representation; invariants; Landau theory.
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