@book{6714,
	author = {Higgins, J. R.},
	title = {Completeness and basis properties of sets of special functions /},
	publisher = {Cambridge University Press,},
	year = {1977.},
	series = {Cambridge tracts in mathematics ;},
	address = {Cambridge [Eng.] ;},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/cam051/76019630.html}
}