On Demontre Qu'un Producteur D'un Materiau Recyclable Detenant une Position de Monopoleur Cherchera a Empecher L'entree Dans le Marche de Firmes Concurrentielles de Recyclage, a Moins Que le Cout du Recyclage Soit Tres Faible Par Rapport au Cout de Production du Materiau Primaire. on Demontre...

This Paper Provides a Rationale for the Difference Between Contract and Spot Prices Which Is Not Based on Risk Aversion But on Price Discrimination. We Model the Behaviour of a Large Buyer Who Groups an Advance Delivery Contract for Part of His Requirements. His Remaining Purchases Are Executed...