Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper introduces a symmetric zoning regulation into a spatial Cournot competition model and analyzes how this intervention affects equilibrium locations and social welfare. It is shown that firms will locate separately at the two endpoints of a wide enough zoning enacted in the middle area of a linear market. This location pattern implies that social welfare can be improved by implementing a proper zoning regulation.