The existence and the use of the essential facilities doctrine was questioned in theory and in practice. Although the doctrine was developed in antitrust, it became a frequently cited notion in the regulation of network utilities. Its relevance is hotly debated during the setup of the new...

In this paper we analyze the synchronization between the business cycles of US and Mexican regions. Regional economic activity in Mexico is measured using regional coincident indexes recently developed at Banco de México, while US aggregate economic activity is measured with the national...