scientific article; zbMATH DE number 1269707

zbMath0918.34037MaRDI QIDQ4236461

Qingyu Zhao, Changming Ding

Publication date: 28 March 1999

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

periodic solutionsnonexistenceLiénard equation

Mathematics Subject Classification ID

Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05)

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