RT Journal Article SR Electronic T1 Is the U.S. Market Irrationally Exuberant? JF The Journal of Investing FD Institutional Investor Journals SP 71 OP 83 DO 10.3905/joi.1998.408465 VO 7 IS 3 A1 Edward F.. Keon, Jr YR 1998 UL https://pm-research.com/content/7/3/71.abstract AB