Aczel, J., On measures of information and their characterizations / J. Acz el, Z. Dar Oczy. - New York : Academic Press, 1975. - xii, 234 pages ; 24 cm. - Mathematics in science and engineering v. 115 . Includes indexes Bibliography: p. 219-226 ISBN: 0120437600 Subjects--Topical Terms: Entropy (Information theory).