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Farajzadeh, A.; Doust, M. H. Rahmani; Haghighifar, F.; Baleanu, D. The stability of Gauss model having one-prey and two-predators. (English) Zbl 1234.34034 Abstr. Appl. Anal. 2012, Article ID 219640, 9 p. (2012); retraction note ibid. 2013, Article ID 212769, 1 p. (2013). MSC: 34C60 92D25 34D20 34D23 PDF BibTeX XML Cite \textit{A. Farajzadeh} et al., Abstr. Appl. Anal. 2012, Article ID 219640, 9 p. (2012; Zbl 1234.34034) Full Text: DOI OpenURL
Sun, Pizhong; Tang, Qiangang; Sun, Shixian Nonlinear oscillation analysis by an orthogonal function method. (English) Zbl 0839.70016 Appl. Math. Mech., Engl. Ed. 16, No. 7, 695-704 (1995). MSC: 70K25 74H45 34C25 PDF BibTeX XML Cite \textit{P. Sun} et al., Appl. Math. Mech., Engl. Ed. 16, No. 7, 695--704 (1995; Zbl 0839.70016) Full Text: DOI OpenURL
Moremedi, G. M.; Mason, D. P. Analysis of the limit cycle of a generalised van der Pol equation by a time transformation method. (English) Zbl 0807.34037 Quaest. Math. 17, No. 3, 349-379 (1994). MSC: 34C05 34E15 65J99 PDF BibTeX XML Cite \textit{G. M. Moremedi} and \textit{D. P. Mason}, Quaest. Math. 17, No. 3, 349--379 (1994; Zbl 0807.34037) Full Text: DOI OpenURL