Voluntary environmental management programs for firms have become an increasingly popular instrument of environmental policy. However, the literature's conclusion on the effectiveness of such programs is ambiguous, and for the European region there is a lack of evidence based on a large control...

Voluntary environmental management programs for firms have become an increasingly popular instrument of environmental policy. However, the literature’s conclusion on the effectiveness of such programs is ambiguous, and for the European region there is a lack of evidence based on a large...

We study the optimal control of a pollutant that accumulates with a delay.We find that optimal paths are, in general, non-monotonic and oscillatory, but monotonic if the objective function is additively separable. Hence, using additively separable objective functions as an approximation to a...