Schreier, Peter J. Statistical signal processing of complex-valued data : the theory of improper and noncircular signals / Peter J. Schreier, Louis L. Scharf. - Cambridge : Cambridge University Press, 2010 - xix, 309 p. : ill. ; 25 cm. Includes bibliographical references and index ISBN: 9780521897723 Subjects--Topical Terms: Signal processing--Statistical methods