Previous |  Up |  Next

Article

References:
[1] C. D. Ahlbrand D. B. Hinton R. T. Lewis: The effect of variable change on oscillation and disconjugacy criteria with application to spectral theory. J. Math. Anal. Appl. 81 (1981) 234-277. MR 0618771
[2] J. H. Barret: A Prüfer transformation for matrix differential equations. Proc. Amer. Math. Soc. 8 (1957) 510-518. MR 0087821
[3] R. Bellman: Introduction to Matrix Analysis. McGraw-Hill New York 1960. MR 0122820 | Zbl 0124.01001
[4] O. Borůvka: Linear Differential Transformation of the Second Order. London 1971. MR 0463539
[5] P. Hartman: Self-adjoint, nonoscillatory systems of ordinary, second order, linear equations. Duke Math. J. 24 (1957) 25-35. MR 0082591
[6] M. Morse: A generalization of the Sturm separation and comparison theorem in n-space. Math. Ann. 103 (1935) 72-91.
[7] J. Radon: Zum problem von Lagrange. Abh. Math. Sem. Univ. Hamburg 6 (1928) 273 - 279.
[8] W. T. Reid: Ordinary Differential Equations. John Willey, New York 1971. MR 0273082 | Zbl 0212.10901
[9] R. L. Sternberg: Variational methods and nonoscillatory theorems for systems of differential equations. Duke Math. J. 19 (1952) 311-322. MR 0048668
Partner of
EuDML logo