Goulielmos, Alexander M. - In: Spoudai : journal of economics and business 67 (2017) 2, pp. 47-68
regress between contestability, duopoly, monopolistic competition and game theory. This paper proposes an oligopoly model with … concentration (using HHI and CRn indices) measured in 4 carriers and found 0.315>0.2 in turnover in 2002, indicating oligopoly. The …