@article {grace2012oscillation,
	title = {On the oscillation of fractional differential equations},
	journal = {Fractional Calculus and Applied Analysis},
	volume = {15},
	number = {2},
	year = {2012},
	note = {n/a},
	pages = {222{\textendash}231},
	publisher = {Versita},
	abstract = {n/a},
	author = {Grace, Said and Agarwal, Ravi and Wong, Patricia and Zafer, A{\u g}ac{\i}k}
}
