@article{02096924,
title = {On the oscillation of solutions of first-order differential equations with retarded arguments.},
journal = {Georgian Mathematical Journal},
volume = {10},
year = {2003},
pages = {63-76},
zbl = {1051.34051},
language = {en},
url = {http://dml.mathdoc.fr/item/02096924}
}
Grammatikopoulos, M.K.; Koplatadze, R.; Stavroulakis, I.P. On the oscillation of solutions of first-order differential equations with retarded arguments.. Georgian Mathematical Journal, Tome 10 (2003) pp. 63-76. http://gdmltest.u-ga.fr/item/02096924/