The term centre of economic interest indicates the fact there exists some location within the economic territory on, or from, which a unit engages, and intends to continue to engage, in economic activities and transactions on a significant scale, either indefinitely or over a finite but long period of time (a year or more). It follows that a unit which carries out such transactions on the economic territory of several countries is deemed to have a centre of economic interest in each of them. The ownership of land and buildings within the economic territory is deemed to be sufficient in itself for the owner to have a centre of economic interest there.