A.M. Toxen, P.C. Kwok, et al.
Physical Review Letters
The calculation of response functions in the Green's-function method for canonical ensembles is illustrated. The example given is the evaluation of the susceptibility of a lattice of magnetic ions in the mean-field approximation. © 1971 The American Physical Society.
A.M. Toxen, P.C. Kwok, et al.
Physical Review Letters
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Solid State Communications
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Physics Letters A
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