Zygmund, Antoni, 1900- Trigonometrical series / Antoni Zygmund - U. S. A. : Dover, 1955 - 344p. ; 20 cm. Includes index Bibliography p. 321-329 p ISBN: USD 1.50 Subjects--Topical Terms: Fourier seriesTrigonometrical functionsMathematics Dewey Class. No.: 517.21