@article {grace2010oscillation,
	title = {Oscillation of Fourth-Order Dynamic Equations ABSTRACT| FULL TEXT},
	journal = {Hacettepe Journal of Mathematics and Statistics},
	volume = {39},
	number = {4},
	year = {2010},
	note = {n/a},
	pages = {545{\textendash}553},
	publisher = {Hacettepe University},
	abstract = {n/a},
	author = {Said R. Grace and Martin Bohner and others}
}
