{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T16:39:41Z","timestamp":1774543181456,"version":"3.50.1"},"reference-count":27,"publisher":"World Scientific Pub Co Pte Ltd","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Advs. Complex Syst."],"published-print":{"date-parts":[[2007,12]]},"abstract":"<jats:p> A Stuart\u2013Landau system under delay feedback control with the nonlinear delay-dependent parameter e<jats:sup>-p\u03c4<\/jats:sup> is investigated. A geometrical demonstration method combined with theoretical analysis is developed so as to effectively solve the characteristic equation. Multi-stable regions are separated from unstable regions by allocations of Hopf bifurcation curves in (p,\u03c4) plane. Some weak resonant and non-resonant oscillation phenomena induced by double Hopf bifurcation are discovered. The normal form for double Hopf bifurcation is deduced. The local dynamical behavior near double Hopf bifurcation points are also clarified in detail by using the center manifold method. Some states of two coexisting stable periodic solutions are verified, and some torus-broken procedures are also traced. <\/jats:p>","DOI":"10.1142\/s0219525907001227","type":"journal-article","created":{"date-parts":[[2008,2,12]],"date-time":"2008-02-12T05:09:10Z","timestamp":1202792950000},"page":"423-448","source":"Crossref","is-referenced-by-count":6,"title":["DOUBLE HOPF BIFURCATION FOR STUART\u2013LANDAU SYSTEM WITH NONLINEAR DELAY FEEDBACK AND DELAY-DEPENDENT PARAMETERS"],"prefix":"10.1142","volume":"10","author":[{"given":"SUQI","family":"MA","sequence":"first","affiliation":[{"name":"School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. 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