ZhETF, Vol. 82,
No. 2,
p. 601 (February 1982)
(English translation - JETP,
Vol. 55,
No. 2,
p. 358,
February 1982
)
The issue content is only available in english translation.
The Urbach rule and excitonic effects
A.S. loselevich
Received: September 10, 1981
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