Lloyd, N. G.; Christopher, C. J.; Devlin, J.; Pearson, J. M.; Yasmin, N. Quadratic-like cubic systems. (English) Zbl 0898.34026 Differ. Equ. Dyn. Syst. 5, No. 3-4, 329-345 (1997). MSC: 34C05 37G15 PDFBibTeX XMLCite \textit{N. G. Lloyd} et al., Differ. Equ. Dyn. Syst. 5, No. 3--4, 329--345 (1997; Zbl 0898.34026)
Pearson, J. M.; Lloyd, N. G.; Christopher, C. J. Algorithmic derivation of centre conditions. (English) Zbl 0876.34033 SIAM Rev. 38, No. 4, 619-636 (1996). Reviewer: S.Yu.Pilyugin (St.Peterburg) MSC: 34C05 34-04 PDFBibTeX XMLCite \textit{J. M. Pearson} et al., SIAM Rev. 38, No. 4, 619--636 (1996; Zbl 0876.34033) Full Text: DOI
Christopher, Colin J.; Lloyd, Noel G. Small-amplitude limit cycles in polynomial Liénard systems. (English) Zbl 0855.34030 NoDEA, Nonlinear Differ. Equ. Appl. 3, No. 2, 183-190 (1996). Reviewer: R.Lee (Fredericton) MSC: 34C05 PDFBibTeX XMLCite \textit{C. J. Christopher} and \textit{N. G. Lloyd}, NoDEA, Nonlinear Differ. Equ. Appl. 3, No. 2, 183--190 (1996; Zbl 0855.34030) Full Text: DOI
Christopher, C. J.; Lloyd, N. G. Polynomial systems: A lower bound for the Hilbert numbers. (English) Zbl 0839.34033 Proc. R. Soc. Lond., Ser. A 450, No. 1938, 219-224 (1995). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{C. J. Christopher} and \textit{N. G. Lloyd}, Proc. R. Soc. Lond., Ser. A 450, No. 1938, 219--224 (1995; Zbl 0839.34033) Full Text: DOI
Christopher, C. J.; Lloyd, N. G.; Pearson, J. M. On Cherkas’s method for centre conditions. (English) Zbl 0833.34023 Nonlinear World 2, No. 4, 459-469 (1995). MSC: 34C05 PDFBibTeX XMLCite \textit{C. J. Christopher} et al., Nonlinear World 2, No. 4, 459--469 (1995; Zbl 0833.34023)
Christopher, C. J.; Lloyd, N. G. On the paper of Jin and Wang concerning the conditions for a centre in certain cubic systems. (English) Zbl 0696.34026 Bull. Lond. Math. Soc. 22, No. 1, 5-12 (1990). Reviewer: N.G.Lloyd MSC: 34C15 37G15 PDFBibTeX XMLCite \textit{C. J. Christopher} and \textit{N. G. Lloyd}, Bull. Lond. Math. Soc. 22, No. 1, 5--12 (1990; Zbl 0696.34026) Full Text: DOI