Whereas the process of integration economic is accentuated in Europe, regional integration dynamics of space seems to be a crucial issue. Reflexions engaged, in particular through the SDEC, aim at promoting a voluntarist policy of polycentric adjustment of European space. Thus we are led to...

Although it is frequent, discontinuous (leapfrog) development has rarely been addressed by the literature, because traditional models are unable to conceive diverse urban forms. This article is a survey of theoretical explanations of discontinuous development. It follows two parts. First, taking...

The question of the urban form-daily mobility interaction was recently renewed. The model of the Compact City aims at increasing densities to decrease the use of the automobile. However, the density-mobility interaction is questioned in the polycentric city : on one’s hand, suburban employment...