@article {grace2010oscillatory,
	title = {On the oscillatory and asymptotic behavior of certain fourth order difference equations},
	journal = {Journal of Functional Differential Equations},
	volume = {17},
	number = {1-2},
	year = {2010},
	note = {n/a},
	pages = {105{\textendash}112},
	abstract = {n/a},
	author = {Said R. Grace and Agarwal, Ravi P and Pinelas, Sandra}
}
