This paper investigates the impact of localization economies on firms' locations. It is known that such external effects lead to substantial cost reductions when firms are located together. However, when they are agglomerated, firms also face the prospects of tough price competition whose...

We combine spatial and monopolistic competition to study market interactions between downtown retailers and an outlying shopping mall. Consumers shop at either marketplace or at both, and buy each variety in volume. The market solution stems from the interplay between the market expansion...

We propose a general model of monopolistic competition which encompasses existing models while being flexible enough to take into account new demand and competition features. Even though preferences need not be additive and/or homothetic, the market outcome is still driven by the sole variable...