@article{03957657, title = {k-component disconjugacy for systems of ordinary differential equations.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {9}, year = {1986}, pages = {373-380}, doi = {10.1155/S0161171286000467}, zbl = {0595.34012}, language = {en}, url = {http://dml.mathdoc.fr/item/03957657} }
Henderson, Johnny. k-component disconjugacy for systems of ordinary differential equations.. International Journal of Mathematics and Mathematical Sciences, Tome 9 (1986) pp. 373-380. doi : 10.1155/S0161171286000467. http://gdmltest.u-ga.fr/item/03957657/