RT Journal Article SR Electronic T1 Forecasting Volatilities and Correlations with EGARCH Models JF The Journal of Derivatives FD Institutional Investor Journals SP 51 OP 63 DO 10.3905/jod.1993.407877 VO 1 IS 2 A1 Robert Cumby A1 Stephen Figlewski A1 Joel Hasbrouck YR 1993 UL https://pm-research.com/content/1/2/51.abstract AB