scientific article; zbMATH DE number 4183884
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Publication:5749605
zbMath0718.34049MaRDI QIDQ5749605
Publication date: 1990
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Periodic solutions to ordinary differential equations (34C25) Fixed-point theorems (47H10) Degree theory for nonlinear operators (47H11) Nonlinear oscillations and coupled oscillators for ordinary differential equations (34C15)
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