@article{00645171,
title = {Sturm's theorem for equations with delayed argument.},
journal = {Georgian Mathematical Journal},
volume = {1},
year = {1994},
pages = {267-276},
doi = {10.1007/BF02254675},
zbl = {0808.34073},
language = {en},
url = {http://dml.mathdoc.fr/item/00645171}
}
Domoshnitsky, A. Sturm's theorem for equations with delayed argument.. Georgian Mathematical Journal, Tome 1 (1994) pp. 267-276. doi : 10.1007/BF02254675. http://gdmltest.u-ga.fr/item/00645171/