Modélisation « PAC » du secteur extérieur de l'économie américaine Staff Working Paper 2004-3 Marc-André Gosselin, René Lalonde In this paper, the authors use polynomial adjustment cost (PAC) models to analyze and forecast the main components of the U.S. trade sector. Content Type(s): Staff research, Staff working papers Topic(s): Domestic demand and components, Econometric and statistical methods, International topics JEL Code(s): C, C3, C32, E, E3, E37, F, F4, F47