JETP, Vol. 63,
No. 6,
p. 1270 (June 1986)
(Russian original - ZhETF,
Vol. 90,
No. 6,
p. 2167,
June 1986
)
Parametric magnons as a source of singularities in the spectra of other quasiparticles
V.I. Ozhogin, G.E. Fal'kovich
Received: December 10, 1985
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