@book{94869,
	author = {Jackson, Dunham},
	title = {The theory of approximation},
	publisher = {The American mathematical society},
	year = {1930.},
	series = {American mathematical society. Colloquium publications, Vol. XI},
	address = {New York},
	note = {"Some parts [of the present work] have been published previously, in my thesis, in various articles in the Transactions of the American mathematical society, and elsewhere."--Pref.}
}