TY - BOOK AU - Elton, E. J. AU - Cruber, M. J. TI - PORTFOLIO THEORY, 25 YEARS AFTER U1 - 332.670184 PY - 1979/// CY - Amsterdam PB - North-Holland KW - Investments -- Mathematical Models KW - Markowitz, Harry Max, 1927- N1 - Essays In Honor Of Harry Markowitz ER -