In this article, a vector autoregressive model is applied to the two main Portuguese cable television operators in order to obtain a dynamic analysis of the interactivity established between the supply and demand of network services. The results reveal the existence of two driving forces. On the...

In the context of interdependence of the financial markets, it becomes interesting to analyze the effects of the terrorist attacks of September 11, 2001, in USA, on the different financial markets. The paper attempts to demonstrate the occurence of a contagion effect among few important...