RT Journal Article SR Electronic T1 The Constant Elasticity of Variance Option Pricing Model JF The Journal of Portfolio Management FD Institutional Investor Journals SP 15 OP 17 DO 10.3905/jpm.1996.015 VO 23 IS 5 A1 John C. Cox YR 1997 UL https://pm-research.com/content/23/5/15.abstract AB