Härdle, Wolfgang. Smoothing techniques : with implementation in S / Wolfgang Härdle. - New York : Springer-Verlag, c1991. - xi, 261 p. : ill. ; 25 cm. - Springer series in statistics. . - Springer series in statistics. . Includes index. ISBN: 0387973672 (New York) 3540973672 (Berlin) Subjects--Topical Terms: Mathematical statistics--Data processing.Smoothing (Statistics) Dewey Class. No.: 519.5 / HAS 1991