@article {grace2000oscillation,
	title = {Oscillation of certain difference equations},
	journal = {Czechoslovak Mathematical Journal},
	volume = {50},
	number = {2},
	year = {2000},
	note = {n/a},
	pages = {347{\textendash}358},
	publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
	abstract = {n/a},
	author = {Said R. Grace}
}
