JETP, Vol. 68,
No. 3,
p. 516 (March 1989)
(Russian original - ZhETF,
Vol. 95,
No. 3,
p. 899,
March 1989
)
Anharmonic theory of a phase with a spontaneously broken symmetry in erromagnets exhibiting an easy-plane single-ion anisotropy of arbitrary magnitude
F.P. Onufrieva
Received: May 11, 1988
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