With the case study of the city of Marseille over the period 1997-2000, this article attempts to analyze the motivation of the city for issuing guaranteed municipal bond and to identify the determining factors of the risk premium. The case study shows the existence of the juridical risk that...

This paper uses individual supermarket prices and analyses to what extent absolute deviations from the law of one price are attributable to transaction costs. The results indicate that absolute percentage price differences are increasing in distance, but at a decreasing rate. Similarly, crossing...

Cet article analyse la relation entre la concentration et la discrimination par les prix sur les routes aériennes en Europe. Nous estimons l'impact des restrictions sur les prix afin d'évaluer la discrimination. Les données de prix ont été collectées de manière séquentielle et portent...

Agricultural price volatility is "bad". But where does it come from? Remedies are completely different for "endogenous" or "exogenous" fluctuations. The recent crisis seems to indicate that exogenous remedies have been applied to endogenous fluctuations.

The present study which started in 1999 is framed in the INCOYAM project. Marketing systems of yam are analyzed in three West- African countries: Cote d'Ivoire, Benin and Nigeria. Surveys have been carried out on urban (wholesales and retailers) and rural (collectors) traders. Cities and...