Zhou, Yuanzhe; Cirtoaje, Vasile Some strong sufficient conditions for cyclic homogeneous polynomial inequalities of degree four in nonnegative variables. (English) Zbl 1298.26046 J. Nonlinear Sci. Appl. 6, No. 2, 74-85 (2013). MSC: 26D05 PDFBibTeX XMLCite \textit{Y. Zhou} and \textit{V. Cirtoaje}, J. Nonlinear Sci. Appl. 6, No. 2, 74--85 (2013; Zbl 1298.26046) Full Text: DOI Link
Cirtoaje, Vasile; Zhou, Yuanzhe Necessary and sufficient conditions for cyclic homogeneous polynomial inequalities of degree four in real variables. (English) Zbl 1244.26029 Aust. J. Math. Anal. Appl. 9, No. 1, Article No. 15, 16 p. (2012). MSC: 26D05 PDFBibTeX XMLCite \textit{V. Cirtoaje} and \textit{Y. Zhou}, Aust. J. Math. Anal. Appl. 9, No. 1, Article No. 15, 16 p. (2012; Zbl 1244.26029) Full Text: Link