This paper investigates on price competition in the Hotelling location model with linear transportation costs when consumer preferences are affected by the number of consumers shopping at the same store. A consumption externality permits to consider the imitation and the congestion effects which...

This paper provides the Nash equilibrium under homogeneous duopoly a la Bertrand. The optimal consumers' behaviour is obtained assuming a specific externality in the utility function. This externality permits to consider at the same time, and not alternatively, the imitation and the crowd...