We try to understand why firms producing goods by means of complementary components do not merge, especially in industries in which investments in component-based knowledge matters. As Audretsch, we state that these activities are developed by “individuals” who do their best to appropriate...

Bon nombre de bassins aquifères, tel que celui de la Crau, en bordure Est de la Camargue, sont non seulement exploités par l'activité humaine mais ont également la propriété d'être approvisionnés par une agriculture basée sur une irrigation traditionnelle. La gestion de l'eau...

Rainwater harvesting, consisting in collecting runoff from precipitation, has been widely developed to stop groundwater declines and even raise water tables. However this expected environmental effect is not self-evident. We show in a simple setting that the success of this conjunctive use...

<italic>Many aquifers, such as the Crau one, located in South-East of France, are not only exploited in order to satisfy human needs but are also replenished thanks to some farmers who are irrigating their crops according to old practices. Because of the positive externality hence induced, groundwater...</italic>

Permit markets lead polluting firms to purchase abatement goods from an eco-industry which is often concentrated. This paper studies the consequences of this sort of imperfectly competitive eco-industry on the equilibrium choices of the competitive polluting firms. It then characterizes the...