ZhETF, Vol. 59,
No. 2,
p. 507 (February 1971)
(English translation - JETP,
Vol. 32,
No. 2,
p. 278,
February 1971
)
The issue content is only available in english translation.
Possible Existence of 23S1 Positronium in Matter
S.I. Urbanovich
Received: January 30, 1970
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