@article{107233, author = {Heinrich W. Guggenheimer}, title = {A Leighton-Bor\r uvka formula for Morse conjugate points}, journal = {Archivum Mathematicum}, volume = {021}, year = {1985}, pages = {189-193}, zbl = {0585.34024}, mrnumber = {833130}, language = {en}, url = {http://dml.mathdoc.fr/item/107233} }
Guggenheimer, Heinrich W. A Leighton-Borůvka formula for Morse conjugate points. Archivum Mathematicum, Tome 021 (1985) pp. 189-193. http://gdmltest.u-ga.fr/item/107233/
Lineare Differentialtransformationen 2. Ordnung, VEB Deutsch. Verlag Wiss. Berlin 1967. (1967) | MR 0236448
Oscillation theory of systems of ordinary differential equations, Thesis, PINY 1979. (1979)
On focal points and limit behavior of solutions of differential equations, Arch. Math. (Brno) 14 (1978) 139-144. (1978) | MR 0508430
Geometric theory of differential equations, III. Second Order Equations of the Reals, Arch. rat. Mech. Anal. 41 (1971) 219-240. (1971) | MR 0357939
Applicable Geometry, Krieger, Huntington NY 1977. (1977) | MR 0442821 | Zbl 0396.52001
Principal quadratic functionals, TAMS 67 (1949) 253-274. (1949) | MR 0034535 | Zbl 0041.22404
On the monotone nature of boundary value functions for n-th order differential equations, Canad. Math. Bull. 15 (1972) 253-258. (1972) | MR 0310324 | Zbl 0236.34019
Ordinary Differential Equations, Wiley NY 1971. (1971) | MR 0273082 | Zbl 0212.10901