scientific article; zbMATH DE number 4186679
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Publication:5751618
zbMath0719.58010MaRDI QIDQ5751618
Gilles Fournier, Michel Willem
Publication date: 1990
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Periodic solutions to ordinary differential equations (34C25) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05)
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