@article{03605290, title = {Necessary and sufficient conditions for eventually vanishing oscillatory solutions of functional equations with small delays.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {1}, year = {1978}, pages = {269-283}, doi = {10.1155/S0161171278000307}, zbl = {0389.34048}, language = {en}, url = {http://dml.mathdoc.fr/item/03605290} }
Singh, Bhagat. Necessary and sufficient conditions for eventually vanishing oscillatory solutions of functional equations with small delays.. International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978) pp. 269-283. doi : 10.1155/S0161171278000307. http://gdmltest.u-ga.fr/item/03605290/