
JETP, Vol. 72,
No. 4,
p. 666 (April 1991)
(Russian original - ZhETF,
Vol. 99,
No. 4,
p. 1196,
April 1991
)
Connection between the real-time technique in thermofield dynamics and the Matsubara approach in quantum statistical physics
A.A. Abrikosov, Jr.
Received: May 30, 1990
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