@article{03640049,
title = {On slow oscillation and nonoscillation in retarded equations.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2},
year = {1979},
pages = {523-530},
doi = {10.1155/S0161171279000417},
zbl = {0412.34018},
language = {en},
url = {http://dml.mathdoc.fr/item/03640049}
}
Singh, Bhagat. On slow oscillation and nonoscillation in retarded equations.. International Journal of Mathematics and Mathematical Sciences, Tome 2 (1979) pp. 523-530. doi : 10.1155/S0161171279000417. http://gdmltest.u-ga.fr/item/03640049/