@article {grace2011oscillation,
	title = {Oscillation criteria for a fourth order sublinear dynamic equation on time scale},
	journal = {Ann. Differential Equ},
	volume = {27},
	year = {2011},
	note = {n/a},
	pages = {361{\textendash}366},
	abstract = {n/a},
	author = {Said R. Grace and Agarwal, Ravi P and Pinelas, Sandra}
}
