RT Journal Article SR Electronic T1 Volatility Prediction JF The Journal of Derivatives FD Institutional Investor Journals SP 50 OP 65 DO 10.3905/jod.1994.407912 VO 2 IS 2 A1 Ronald C. Heynen A1 Harry M. Kat YR 1994 UL https://pm-research.com/content/2/2/50.abstract AB