norme (1) prix (1) firme (1) science économique (1) demande (offre et demande) (1) Costs (1) Methods (1) Identification (1) Revenue (1) Prices (1) Markup (1) Industrial productivity (1) Identification (1) Economics (1) Econometrics (1) Competition, Imperfect (1) Methods (1) Identification (1) Prices (1) Quantity (1)