@book{228,
	author = {Spiegel, Murray R.},
	title = {Theory and problems of complex variables with an introduction to conformal mapping and its application /},
	publisher = {McGraw-Hill,},
	year = {c2004-05.},
	series = {Schum's outline of complex variables},
	address = {Singapore:},
	edition = {Rep.},
	note = {Includes index.}
}