Directional derivatives are the ideal tool to model simultaneous shifts of the instruments of economic policy. Provided the equilibrium solution of an oligolistic model are differentiable with respect to the parameter, such a problem can be easily solved considering shift in single instruments,...

The literature so far has analyzed the effects of Minimum Quality Standards (MQS) in oligopoly, using models of pure vertical differentiation, with only two firms, and perfect information. We consider products that are differentiated horizontally and vertically, with imperfect consumers'...

We study firms' incentives to transfer knowledge about production technology to a rival in a Cournot duopoly. In a setting where two technologies are available, a technology is characterized by its associated cost function and no single technology is strictly superior to the other. A firm has...