@article{01180640,
title = {Necessary and sufficient conditions for the oscillation of delay differential equations with a piecewise constant argument.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {21},
year = {1998},
pages = {493-497},
doi = {10.1155/S0161171298000702},
zbl = {0904.34052},
language = {en},
url = {http://dml.mathdoc.fr/item/01180640}
}
Agwo, H.A. Necessary and sufficient conditions for the oscillation of delay differential equations with a piecewise constant argument.. International Journal of Mathematics and Mathematical Sciences, Tome 21 (1998) pp. 493-497. doi : 10.1155/S0161171298000702. http://gdmltest.u-ga.fr/item/01180640/