@book{8122,
	author = {Knopp, Konrad, and Bers, Lipman.},
	title = {Problem book in the theory of functions  : },
	publisher = {Dover Publications,},
	year = {[1948-52]},
	series = {Dover series in mathematics and physics},
	address = {New York :},
	edition = {[1st American ed.]},
	note = {V. 1 translated by L. Bers ; v. 2 translated by F. Bagemihl.}
}