Elton, Edwin J.. Modern portfolio theory and investment analysis / Edwin J. Elton and Martin J. Gruber. - 5th ed / . - Singapore : John Wiley , 1996. - xix,715p. : ill.,figs.,table ; 24cm . NULL ISBN: 9971511878 USD 5.95 Subjects--Index Terms: PORTFOLIO MANAGEMENT INVESTMENT ANALYSIS Dewey Class. No.: 332.6 / ELT/M