ZhETF, Vol. 70,
No. 3,
p. 1100 (March 1976)
(English translation - JETP,
Vol. 43,
No. 3,
p. 574,
March 1976
)
The issue content is only available in english translation.
Diagram technique and gas approximation in the Hubbard model
R.O. Zaitsev
Received:
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