Erratum: Solutions of minimal period for a semilinear wave equation
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Publication:803812
DOI10.1007/BF01765324zbMath0726.35086MaRDI QIDQ803812
Publication date: 1990
Published in: Annali di Matematica Pura ed Applicata. Serie Quarta (Search for Journal in Brave)
Periodic solutions to PDEs (35B10) Second-order nonlinear hyperbolic equations (35L70) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05)
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