@article {OA1040,
	title = {From Differences to Derivatives},
	journal = {Fractional Calculus \& Applied Analysis},
	volume = {7},
	number = {4},
	year = {2004},
	note = {n/a},
	pages = {459{\textendash}471},
	publisher = {Institute of Mathematics \& Informatics},
	abstract = {n/a},
	url = {http://oa.uninova.pt/1040/},
	author = {Manuel Ortigueira and Fernando Coito}
}
