Concentration, Barriers to Entry, and Long Run Economic Profit Margins

Barriers to New Competition

1957 • 2,906 citations

The Theory of Monopolistic Competition

1957 • 2,285 citations

The Concept of Monopoly and the Measurement of Monopoly Power

1995 • 818 citations

Seller Concentration, Barriers to Entry, and Rates of Return in Thirty Industries, 1950-1960

1966 • 252 citations

The Profit Rate as a Measure of Monopoly Power

1941 • 70 citations

Concentration, Barriers to Entry and Rates of Return

1968 • 61 citations