%0 Journal Article %A Harvey M. Salkin %A Peter H. Ritchken %T Comment %B Option Spreading %D 1981 %R 10.3905/jpm.1981.408784 %J The Journal of Portfolio Management %P 89-90 %V 7 %N 2 %U https://jpm.pm-research.com/content/iijpormgmt/7/2/89.full.pdf