@article {agarwal2003oscillation,
	title = {On the oscillation of certain second order difference equations},
	journal = {Journal of Difference Equations and Applications},
	volume = {9},
	number = {1},
	year = {2003},
	note = {n/a},
	pages = {109{\textendash}119},
	publisher = {Taylor \& Francis Group},
	abstract = {n/a},
	author = {Agarwal, Ravi P and Said R. Grace and O{\textquoteright}regan, Donal}
}
