@book{59156,
	author = {Polya, George and Szego, Gabor},
	title = {Problems and Theorems in Analysis, Vol.II: Theory of functions, Zeors, Polynominals, Determinants, number theory, Geometry, George Polya, eng},
	year = {1998},
	series = {Classics in Mathematics},
	address = {New York, Springer-Verlag, US}
}