Izobov, N. A. Linear systems of ordinary differential equations. (English) Zbl 0342.34035 J. Sov. Math. 5, 46-96 (1976). MSC: 34D05 34D20 34A30 PDFBibTeX XMLCite \textit{N. A. Izobov}, J. Sov. Math. 5, 46--96 (1976; Zbl 0342.34035) Full Text: DOI
Birkhoff, Garrett; Kotin, Leon The orbit structure of uniformly positive cyclic systems. (English) Zbl 0342.34032 J. Math. Anal. Appl. 55, 476-489 (1976). MSC: 37-XX 34A30 34C05 34C10 PDFBibTeX XMLCite \textit{G. Birkhoff} and \textit{L. Kotin}, J. Math. Anal. Appl. 55, 476--489 (1976; Zbl 0342.34032) Full Text: DOI
Bushell, P. J. Hilbert’s metric and positive contraction mappings in a Banach space. (English) Zbl 0275.46006 Arch. Ration. Mech. Anal. 52, 330-338 (1973). MSC: 46A40 51M10 47B60 15B48 47H99 PDFBibTeX XMLCite \textit{P. J. Bushell}, Arch. Ration. Mech. Anal. 52, 330--338 (1973; Zbl 0275.46006) Full Text: DOI
Abdel Karim, Rahmi Ibrahim Ibrahim On the zeros of solutions of certain differential equations of the fifth order. (English) Zbl 0272.34045 Acta Math. Acad. Sci. Hung. 23, 335-340 (1972). MSC: 34C10 PDFBibTeX XMLCite \textit{R. I. I. Abdel Karim}, Acta Math. Acad. Sci. Hung. 23, 335--340 (1972; Zbl 0272.34045) Full Text: DOI
Birkhoff, G.; Kotin, L. Positive cyclic systems of linear differential equations. (English) Zbl 0202.08501 J. Differ. Equations 7, 407-416 (1970). PDFBibTeX XMLCite \textit{G. Birkhoff} and \textit{L. Kotin}, J. Differ. Equations 7, 407--416 (1970; Zbl 0202.08501) Full Text: DOI