PT - JOURNAL ARTICLE AU - Robert L. Welch AU - Louis Culumovic TI - A Profitable Call Spreading Strategy on the CBOE AID - 10.3905/jod.1995.407913 DP - 1995 Feb 28 TA - The Journal of Derivatives PG - 24--44 VI - 2 IP - 3 4099 - https://pm-research.com/content/2/3/24.short 4100 - https://pm-research.com/content/2/3/24.full