@article {219342,
	title = {On the oscillation of certain second order difference equations},
	journal = {Journal of Difference Equations and Applications},
	volume = {9},
	year = {2003},
	note = {n/a},
	pages = {109-119},
	publisher = {Taylor \& Francis},
	abstract = {n/a},
	isbn = {1023-6198},
	author = {Agarwal, Ravi P and Said R. Grace and O{\textquoteright}regan, Donal}
}
