We use a vertical product differentiation model under partial market coverage to study the social welfare optimum and duopoly equilibrium when convex costs of quality provision are either fixed or variable in terms of production. We show the following new results. First, under fixed costs, the...

A three-stage game including investments, environmental quality provision and price competition is developed to study the impact of green technology investment (ecolabeling), in a duopoly model of vertical product differentiation. The firms’ incentives to invest in green technologies depend on...

This paper extends the Hartman model to include the case where two adjacent stands may be interdependent in the provision of amenity services. We show first that the relationship between the focal and exogenous rotation age depends on the nature of their temporal interdependence, i.e. on what...