@article {14192,
	title = {OSCILLATION OF FOURTH-ORDER DYNAMIC EQUATIONS},
	journal = {Hacettepe Journal of Mathematics and Statistics  },
	volume = {39},
	year = {2010},
	pages = {545 {\textendash} 553},
	attachments = {https://scholar.cu.edu.eg/sites/default/files/engineering_sector/files/545-553.pdf},
	author = {Said R. Grace and Martin Bohner and Shurong Sun}
}
