I: Microeconomic Foundations of Disequilibrium.- Disequilibrium characterized by implicit prices in terms of effort.- II: Sectoral Econometric Models.- The MOGLI model: a pluri-sectoral econometric dynamic model of the French economy.- The DMS model: version 2.- III: Regional Econometric Models.- The REGINA model: a short presentation and some main results.- IV: National Econometric Models.- The forecasting model GRECON 79-D: Some specification experiments.- The METRIC model: presentation, simulation and multipliers.- The VINTAF-II model for the Dutch economy.- V: International Econometric Models.- INTERPLAY: a linked model for economic policy in the EEC.