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oai:zbmath.org:3875884
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35
Kurylev, Ya. V.
1984
3875884
English
Consultants Bureau, New York
https://zbmath.org/03875884
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J. Sov. Math. 24, 367-372 (1984); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 117, 162-171 (1981).
35Q99; 35B25
A nonlinear analog of the WKB method and the method of the averaged Lagrangian
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