ZhETF, Vol. 38,
No. 6,
p. 1879 (December 1960)
(English translation - JETP,
Vol. 11,
No. 6,
p. 1351,
December 1960
)
The issue content is only available in english translation.
Variational Principles for Nonstationary Quantum Mechanical Problems and Perturation Theory
Yu. N. Demkov
Received: January 19, 1960
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