Truesdell, C. 1919- An essay toward a unified theory of special functions based upon the functional equation. - Princeton, N.J.: Princeton University Press, 1948. - iv, 182 p.: diagrs., 23 cm. - Annals of mathematics studies; no. 18. . Bibliography: p. 177-182. LCCN: 49003139 //r87 Subjects--Topical Terms: Functional equations. Dewey Class. No.: 515.5 / T866e