ZhETF, Vol. 36,
No. 6,
p. 1928 (December 1959)
(English translation - JETP,
Vol. 9,
No. 6,
p. 1371,
December 1959
)
The issue content is only available in english translation.
A Dynamical Principle for Second-Order Equations
A.A. Borgardt
Received: February 9, 1959
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Golden Pages
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