@article {grace1999oscillation,
	title = {On the oscillation of functional differential equations},
	journal = {Mathematische Nachrichten},
	volume = {203},
	number = {1},
	year = {1999},
	note = {n/a},
	pages = {111{\textendash}123},
	publisher = {Wiley Online Library},
	abstract = {n/a},
	author = {Grace, SR and Hamedani, GG}
}
