the cartel’s internal operations to regulatory filings and market data. We find that collusion induces significant entry …

different approaches to collusion: (i) one-stage static model and (ii) a multi-period oligopoly model. Our main result is that …

input assumption it was found that collusion in the labor market and collusion in the product market have exactly the same …

The empirical literature on mergers, market power and collusion in differentiated markets has mainly focused on methods … alliances. All results are in line with the findings of theoretical models on collusion in horizontally differentiated markets …

collusion sustainability. We show that when consumers can buy only from firms located on their right (left), the incentive to …

) firms choose their output levels noncooperatively. We show that, in our model, collusion is easier to sustain the larger the … a firm is only willing to collude when otherwise collusion cannot be sustained. …

firms have incentives to participate in the cartel because otherwise no collusion is possible. …

In this paper we investigate the connection between the number of competitors and the sustainability of collusion … our model, an increase in the number of cartel firms may increase collusion likelihood by diminishing the negative effects … for collusion of the existence of a competitive fringe. Also, we show that an increase in the number of fringe firrms …