Conover, W. J. Practical nonparametric statistics / W. J. Conover - 2d ed. - New York : Wiley, 1980 - 493 p. : ill. ; 24 cm. - Wiley series in probability and mathematical statistics . Bibliography : p.394-426 Includes index ISBN: 0471028673 / 21.00 (est.) Subjects--Topical Terms: Nonparametric statistics