@book{94669,
	author = {Churchill, Ruel Vance and Brown, James Ward,},
	title = {Complex variables and applications},
	publisher = {McGraw-Hill},
	year = {[1974]},
	address = {New York},
	edition = {3d ed.},
	note = {First ed. published in 1948 under title: Introduction to complex variables and applications.}
}