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scientific article; zbMATH DE number 1008680 - MaRDI portal

scientific article; zbMATH DE number 1008680

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zbMath0872.92014MaRDI QIDQ4336447

Xuanliang Liu, Jianhong Li

Publication date: 12 May 1997

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

zbMATH Keywords

limit cycles weak focus nonlinear incidence rates SIRS epidemiological model nonexistence of closed orbits

Mathematics Subject Classification ID

Epidemiology (92D30) Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05)

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