¹⁷ See A. R. Bass, Fiedler, and Krueger (1964); Bons, A. R. Bass, and Komorita (1970); Fiedler (1958, 1962, 1964, 1967a); Godfrey, Fiedler and Hall (1959); Gottheil and Vielhaber (1966); Jones and Johnson (1971); and Shiflett (1974).