Pei, Lijun; Wang, Shuo Double Hopf bifurcation of differential equation with linearly state-dependent delays via MMS. (English) Zbl 1428.34127 Appl. Math. Comput. 341, 256-276 (2019). MSC: 34K60 34K18 34K20 37G05 34K23 PDFBibTeX XMLCite \textit{L. Pei} and \textit{S. Wang}, Appl. Math. Comput. 341, 256--276 (2019; Zbl 1428.34127) Full Text: DOI
Govaerts, W.; Guckenheimer, J.; Khibnik, A. Defining functions for multiple Hopf bifurcations. (English) Zbl 0873.65053 SIAM J. Numer. Anal. 34, No. 3, 1269-1288 (1997). MSC: 65H17 37-XX PDFBibTeX XMLCite \textit{W. Govaerts} et al., SIAM J. Numer. Anal. 34, No. 3, 1269--1288 (1997; Zbl 0873.65053) Full Text: DOI