This paper employs the "New Empirical Industrial Organization" approach, developed by Panzar-Rosse, which is used to measure the degree of competition and concentration for 23 industries with 2 Digit ISIC code during the period 1997 -2012. Panzar-Rosse model measures market power by studying how changes in factor input price is reflected in equilibrium revenue by firms, and market power is divi...
