//-->
The concentration of commercial success in popular music : an analysis of the distribution of gold records
Cox, Raymond A. K., (1995)
Measuring trends in sales concentration in American business
Nissan, Edward, (1997)
Economic census / Subject series / 44-45 / Summary
(2001)
Antitrust and the snare of published profit data : the need for "line-of-business" reporting
Dalton, James A., (1974)
The concentration-profitability relationship : is there a critical concentration ratio?
Dalton, James A., (1976)
Deregulation mythmaking aside, the answer is market structure
Penn, David W., (2000)