TY - JOUR T1 - Safety first selection techniques for option spreads JF - The Journal of Portfolio Management SP - 61 LP - 67 DO - 10.3905/jpm.9.3.61 VL - 9 IS - 3 AU - Peter H. Ritchken AU - Harvey M. Salkin Y1 - 1983/04/30 UR - https://pm-research.com/content/9/3/61.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -