Classical microeconomics is intended to explain how a price system is able to coordinate the economic agents. But even if it can be extended to incomplete information and externalities, it remains grounded on very heroic assumptions. Agents are endowed with a very strong rationality, equilibrium...

[spa] La industria francesa frente a los apremios de cambio monetario - A más de su aparente desorden, las peripecias monetarias traducen una realidad fundamental : el poner a debate las modalidades del crecimiento que impera desde de la ultima guerra y sus formas institucionales. En este...

[eng] A new interpretation of german hyperinflation. The aim of this article is to present an interpretation of German hyperinflation which will break radically with the traditional monetarist interpretation. In opposition to the monetarist position, the author has distinguished two highly...

[fre] Analyse des phénomènes d'influence. De la psychologie sociale et cognitive à l'économie financière. . On note dans les travaux récents d'économie financière un nombre grandissant de modèles cherchant à formaliser la manière dont interagissent sur les marchés financiers des...

[eng] Contagion of opinions in financial markets . . Many practitioners have underlined the role played by contagion processes in the generation not only of speculative bubbles but also of excess volatility. The following text shows the truth of such a point of view. Our idea is that, at the...

[fre] The role of interindividu al influences in the determination of stock prices. . Modem economic theory has shown that there is no incompatibility between the assumption of rational behavior and the possibility of speculative bubbles. Nevertheless the theory of rational bubbles is incomplete...