JETP, Vol. 68,
No. 4,
p. 770 (April 1989)
(Russian original - ZhETF,
Vol. 95,
No. 4,
p. 1335,
April 1989
)
Thermodynamic description of phase transitions in crystals with degenerate localized levels
O.V. Gurin, G.L. Budrina, V.N. Syromyatnikov
Received: February 18, 1988
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