@article {219132,
	title = {Oscillation criteria for fourth-order functional differential equations},
	journal = {Mathematica Slovaca},
	volume = {63},
	year = {2013},
	note = {n/a},
	pages = {1303-1320},
	publisher = {De Gruyter},
	abstract = {n/a},
	isbn = {1337-2211},
	author = {Grace, Said and Martin Bohner and Liu, Ailian}
}
