@article {grace1995oscillation,
	title = {On the oscillation of certain functional differential equations},
	journal = {Journal of mathematical analysis and applications},
	volume = {194},
	number = {1},
	year = {1995},
	note = {n/a},
	pages = {304{\textendash}318},
	publisher = {Elsevier},
	abstract = {n/a},
	author = {Grace, SR}
}
