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  • An anharmonic contribution to the Helmholtz free energy O(lambda 6) 

    Gad El-Rab, Shenouda (Brock University, 1973-10-02)
    The anharmonic contributions of order A6 to the Helmholtz free energy for a crystal in which every atom is on a site of inversion symmetry, have been evaluated The cor~esponding diagrams in the various orders of the ...