PT  - JOURNAL ARTICLE
AU  - Peter H. Ritchken
AU  - Harvey M. Salkin
TI  - Safety first selection techniques for option spreads
AID  - 10.3905/jpm.9.3.61
DP  - 1983 Apr 30
TA  - The Journal of Portfolio Management
PG  - 61--67
VI  - 9
IP  - 3
4099  - https://pm-research.com/content/9/3/61.short
4100  - https://pm-research.com/content/9/3/61.full