Henin, Claude G. Options theory and practice / Claude G. Henin, Peter J. Ryan. - Mass Lexington Books : Lexington 1977. - xix, 187 pages : illustration ; 25 cm. Includes index. Bibliography: p. 185-186. ISBN: 0669016233 LCCN: 77-002687 //r892 Subjects--Topical Terms: Options (Finance)