Monopoly Prices Under Joint Costs: Fixed Proportions Marshall R. Colberg Journal of Political Economy 1941 49(1), 103-110
Puts and Calls: A Factual Survey Charles B. Franklin; Marshall R. Colberg Journal of Finance 1958 13(1), 21
PUTS AND CALLS: A FACTUAL SURVEY Charles B. Franklin; Marshall R. Colberg Journal of Finance 1958 13(1), 21-34