PT - JOURNAL ARTICLE AU - Galen Burghardt AU - Morton Lane TI - How to tell if options are cheap AID - 10.3905/jpm.1990.409259 DP - 1990 Jan 31 TA - The Journal of Portfolio Management PG - 72--78 VI - 16 IP - 2 4099 - https://pm-research.com/content/16/2/72.short 4100 - https://pm-research.com/content/16/2/72.full