TY  - BOOK
AU  - Elton,E.J.
AU  - Gruber,M.J.
TI  - Portfolio theory,25 years after
SN  - 0444852794 (pbk.) :
U1  - 332.67 
PY  - 1979///
CY  - Amsterdam, The Netherlands
PB  - North-Holland Pub.
KW  - Investment analysis
N1  - Essays in honor of Harry Markowitz
ER  -