PT - JOURNAL ARTICLE AU - Penn, Robert E. TI - The Economics of the Market in Modern Prints AID - 10.3905/jpm.1980.408779 DP - 1980 Oct 31 TA - The Journal of Portfolio Management PG - 25--32 VI - 7 IP - 1 4099 - http://jpm.pm-research.com/content/7/1/25.short 4100 - http://jpm.pm-research.com/content/7/1/25.full