Stiefel, Eduard L., 1909- An introduction to numerical mathematics / Translated by Werner C. Rheinboldt and Cornelie J. Rheinboldt. - New York : Academic Press, 1963 [printing 1969]. - x, 286 p. : ill. ; 24 cm. Includes Bibliographical reference and index. Subjects--Topical Terms: Numerical calculations. Dewey Class. No.: 518 / STI 1969