@book{6807,
	author = {Körner, T. W. and Körner, T. W.},
	title = {Exercises for Fourier analysis /},
	publisher = {Cambridge University Press,},
	year = {1993.},
	address = {New York, NY, USA :},
	url = {http://www.loc.gov/catdir/description/cam025/92030757.html}
}